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Subseries 1. Photographic Negatives

Section: Original Allegheny Observatory

Section: Exterior Views


Box 1
Folder 1 Original Allegheny Observatory
Folder 2 Original Allegheny Observatory building (George W. Tea, photographer: 1886)
Folder 3-4 Old Allegheny Observatory, front view (George W. Tea, photographer: 1886)
Folder 5-9 Original Allegheny Observatory

Section: Interior Views

Folder 10 Seat ladder from Fitz telescope
Folder 11 13 inch refractor, Allegheny Observatory
Folder 12 13 inch refractor (Fitz)
Folder 13 16 inch Wolf doublet mounted on 13 inch Allegheny Observatory Equatorial (R.R.M. Thorne, photographer)

Section: Observations and Research

Folder 14-15 Sunspot drawing, S.P. Langley
Folder 16 List of the principal memoirs and articles on scientific research conducted at the Allegheny Observatory, 1869-1893

Section: Second Allegheny Observatory

Section: Exterior Views

Folder 17 Keeler's proposed plan for the Allegheny Observatory (1895)
Folder 18-19 Proposed designs for new Allegheny Observatory
Folder 20 Allegheny Observatory construction site preparation (R.R. M. Thorn, photographer: June 23, 1900)
Folder 21-22 Allegheny Observatory construction, foundation work (R.R.M. Thorne, photographer: July 17, 1900)

Box 1a
Folder 1 Allegheny Observatory construction (R.R.M. Thorne, photographer: July 17, 1900)
Folder 2 Allegheny Observatory construction (R.R.M. Thorne, photographer, July 28, 1900)
Folder 3 Allegheny Observatory construction, view of wall erection (R.R.M. Thorne, photographer: July 28, 1900)
Folder 4 Allegheny Observatory construction, wall erection (R.R.M. Thorne, photographer: August 25, 1900)
Folder 5 Allegheny Observatory construction, stone laying (R.R.M. Thorne, photographer: October 20, 1900)
Folder 6-18 Allegheny Observatory construction

Box 2
Folder 1-3 Allegheny Observatory construction
Folder 4 View of Allegheny Observatory before completion of domes
Folder 5 Allegheny Observatory construction front elevation
Folder 6 Allegheny Observatory construction, general view of scaffolding
Folder 7 Allegheny Observatory construction, scaffolding
Folder 8 Allegheny Observatory
Folder 9 Allegheny Observatory, front view
Folder 10 Allegheny Observatory, showing transit house, (lantern slide)
Folder 11 Front view of Allegheny Observatory
Folder 12 Front view of Allegheny Observatory, (Frank Jordan, photographer; positive image).
Folder 13 Southeast view of Observatory, (Positive image)
Folder 14 Observatory grounds
Folder 15-16 Observatory grounds, looking west
Folder 17 Path to Observatory by Keeler dome, (March 3, 1924)
Folder 18 From roof of Allegheny Observatory, looking west
Folder 19 Group on roof of Allegheny Observatory

Section: Interior Views


Box 3
Folder 1 Hallway, Allegheny Observatory
Folder 2 Lecture hall, Allegheny Observatory
Folder 3-4 Director's Office, Allegheny Observatory
Folder 5 Library, Allegheny Observatory
Folder 6 Urania window
Folder 7 Statue of John A. Brashear
Folder 8 Allegheny Observatory shop
Folder 9 Allegheny Observatory shop, from south
Folder 10 Allegheny Observatory shop, showing part of large planer
Folder 11 Sector case and mount on dome power console
Folder 12 Worn-out 8" dome guide wheels

Section: Equipment

Folder 13-14 Porter Spectrograph
Folder 15 Head of Porter Spectrograph, (November 14, 1913)
Folder 16 Slit of Porter Spectrograph
Folder 17 Small Spectrograph and accessories
Folder 18 Infrared Spectrograph
Folder 19 Spectrograph
Folder 20 Spectrograph diagram (interferometer grating)
Folder 21 Interferometer grating spectrograph

Box 4
Folder 1 Interferometer measuring attachment, (January 1929)
Folder 2 Blink comparator, from left
Folder 3 Blink comparator, from right
Folder 4 Burns' comparator
Folder 5 Zeiss comparator of the Allegheny Observatory
Folder 6 Riefler clock
Folder 7 Ordinary arc
Folder 8 Vacuum arc
Folder 9 Vacuum arc, bell off
Folder 10 Hilger siderostat
Folder 11 Galv. Refractometer, Chas. A. Francis, U. of C.
Folder 12 "G" refractometer, Chas. A. Francis, U. of C.
Folder 13 Parallax measuring machine, (April 1, 1914)
Folder 14 Measuring engine
Folder 15 Measuring engine, from left, (April 1, 1914)
Folder 16 Long screw measuring engine
Folder 17 Gear and vernier scales of Burns' measuring engine
Folder 18 Large measuring engine, (October 13, 1926)
Folder 19 Comparison measuring engine
Folder 20 Brashear measuring engine

Box 5
Folder 1 Brashear measuring engine
Folder 2 Brashear plate holder
Folder 3 Brashear device
Folder 4 Instrument: John A. Brashear Co., Ltd.
Folder 5 Instrument: John A. Brashear
Folder 6-9 Instrument

Section: Thaw Telescope

Folder 10 Thaw lens on grinding table at Brashear's shop, (May 8, 1914)
Folder 11 30" disc on grinding table, (May 8, 1914)
Folder 12 Glass discs and scrap after cutting
Folder 13 30" disc (flint), (May 8, 1914)
Folder 14 30" discs with cases before grinding
Folder 15 Thaw lens finished; Dr. Schlesinger and Mr. McDowell (August 3, 1914)
Folder 16 Thaw mounting construction (castings for pier made in the Rosedale Foundry machined by the Wilson Snyder Co.)
Folder 17 Thaw mounting construction; head in position
Folder 18 Thaw mounting
Folder 19 Thaw lens ready to be installed in tube
Folder 20 Thaw Telescope objective end, (July 7, 1915)
Folder 21 Thaw Telescope, (July 7, 1915)

Box 6
Folder 1 Thaw Telescope
Folder 2 Thaw plate holder and eyepiece arrangement
Folder 3 3" camera on Thaw tube
Folder 4 Dr. F. C. Jordan at Thaw Telescope
Folder 5 Thaw plaque
Folder 6-7 Thaw Telescope

Section: Other Telescopes

Folder 8 Transit telescope, Allegheny Observatory
Folder 9 Zenith telescope

Section: Observations

Folder 10 Moon (January 9, 1915)
Folder 11 Moon (January 25, 1915)
Folder 12 Moon (January 28, 1915)
Folder 13-15 Moon
Folder 16 Pleiades (December 7, 1918)

Section: People Associated with the Allegheny Observatory

Section: Individuals

Folder 17 Samuel P. Langley: from Scientific American, Issue of August 29, 1887
Folder 18 Dr. Curtis (May 31, 1914)
Folder 19 Dr. Meggers

Box 6a
Folder 1    Mr. Daniel at the telescope. (November 14, 1920)
Folder 2 F.C. Jordan at the telescope (November 14, 1920)
Folder 3 F.C. Jordan at the telescope
Folder 4 F.C. Jordan at 40" telescope
Folder 5-7 Dr. Kievin Burns

Section: Groups

Folder 8 Group on Allegheny Observatory steps, showing Shapeley on left

Box 7
Folder 1 Steps of Allegheny Observatory: Plaskett, Eichelberger, Jordan, Schlesinger, Pickering, Brashear, Thaw, Daniels
Folder 2 Astronomical Society, group photo.

Section: John A. Brashear

Section: Portraits

Folder 3 John A. Brashear
Folder 4 John A. Brashear (Copy: May 4, 1920)
Folder 5 John A. Brashear

Section: Work

Folder 6 Brashear Co. Shop (May 8, 1914)
Folder 7 Brashear's optical shop
Folder 8 6" equatorial for Mt. Pleasant School by Brashear

Section: Personal Photography of Frank C. Jordan

Section: Family, Friends

Folder 9 Baby, at 10 hours old (F.C. Jordan, photographer: July 19, 1898)
Folder 10 Boy and wagon (July 19, 1900)
Folder 11 Boy (May 24, 1901)
Folder 12 Boy (6:00 P.M. June 3, 1901)
Folder 13 Family group at Maplewood (1908)
Folder 14 Hattie at Picnic, Decoration Day (1909)
Folder 15 Jordan house, 49 Riverview Ave.
Folder 16 Jordan house, (north side)
Folder 17 Jordan house, (south side)
Folder 18 Jean and Andrew with snowman (1910)
Folder 19 Interior, F. Jordan dining room (J.H. Jordan, photographer)
Folder 20 Interior, F.C. Jordan parlor (J.H. Jordan, photographer)
Folder 21 Mr. And Mrs. Frank C. Jordan on porch of home (Lantern slide)
Folder 22 Group at grandfather Craig's

Box 8
Folder 1 House, 49 Observatory Ave. (May 30, 1912)
Folder 2 Jordan family on porch, 49 Riverview Ave.
Folder 3 F. Jordan and F.E. Vincent at 49 Observatory Ave. (August 18, 1912)
Folder 4 John William, (August 3, 1912)
Folder 5 Lightning, from rear porch, 49 Observatory Ave. (August 18, 1912)
Folder 6 F.E. Vincent, 49 Observatory Ave. (August 19, 1912)
Folder 7 John William, his dad and mama (November 28, 1912)
Folder 8 John William with father and grandfather
Folder 9 Jean in Martha Washington gown (February 22, 1913)
Folder 10 F.C. Jordan in costume
Folder 11 Hattie and F.C. in old fashioned pose
Folder 12 Campfire girls' play
Folder 13 Campfire girls, Wissahicken Hollow
Folder 14 Group at Sewickley, 706 Nevin Ave
Folder 15 A.J. Good (April 1, 1913)
Folder 16 A.J. Good and mother (April 1, 1913)
Folder 17 H.J. Heckel, Maryville picnic (June 13, 1913)
Folder 18 Jean on Observatory walk (February 25, 1914)
Folder 19 MacIvor and Jordan family and Dr. Martin (June 1914)
Folder 20 The Armstrong house (July 4, 1914)

Box 9
Folder 1 Krom House (July 4, 1914)
Folder 2 The Krom family (July 4, 1914)
Folder 3 The whole family (April 25, 1915)
Folder 4 Andrew as Uncle Sam (May 30, 1915)
Folder 5 Harriet and F.C. Jordan (November 25, 1915)
Folder 6 Thanksgiving, Harriet and F.C. Jordan, Andrew, Will and Sadie (1915)
Folder 7 Group at Aunt Mary Reed's (July 19, 1916)
Folder 8 John William with dog
Folder 9 Interior at Cheswick (February 8, 1917)
Folder 10 John William (1918)
Folder 11 John William at desk (April 21, 1918)
Folder 12 Dr. F. C. Jordan in a silk hat (April 21, 1918)
Folder 13 Group at Beaver (July 19, 1918)
Folder 14 Foundations of house at Beaver
Folder 15 Rosecroft, S.E. front
Folder 16 House at Beaver from southwest (July 22, 1918)
Folder 17 Andrew (July 22, 1918)
Folder 18 Rosecroft
Folder 19 Fireplace at Rosecroft
Folder 20 Family group on porch, Rosecroft, Beaver, PA
Folder 21 Flower garden at Beaver
Folder 22 Group working in flowers at Beaver, PA. (July 25, 1918)

Box 10
Folder 1 Garage at Beaver, PA. (July 25, 1918)
Folder 2 Family group on rocks at Beaver, PA.
Folder 3 M.E. Church, Children's Day (June 11, 19_)
Folder 4 Watson Church, Harvest House decorations (November 2, 1919)
Folder 5 Watson church, Harvest Home decorations (November 2, 1919)
Folder 6 John William at telescope (November 14, 1919)
Folder 7 Jean, Observatory steps (January 1, 1921)
Folder 8 F.C. Jordan. (February 12, 1921)
Folder 9 "Sandy" and Catherine Lamb in living room, Cheswick (March 12, 1921)
Folder 10 "Sandy" Lamb

Section: Views in Ohio

Folder 11 Snow scene, 49 Riverview (March 4, 1922)
Folder 12 Ohio Company's office, Washington St. (F.C. Jordan, photographer: December 29, 1898)
Folder 13 Mound Cemetery, from north, Charlie Carothers on the steps (F.C. Jordan, photographer: December 28, 1898)
Folder 14 Mound Cemetery
Folder 15 University Hall, Ohio State University (August 22, 1899)
Folder 16 Ohio State University grounds (August 22, 1899)
Folder 17 Orton Hall and Biology Lab, Ohio State University (August 22, 1899)
Folder 18 Deaf and Dumb Asylum, Columbus, Ohio (August 23, 1899)
Folder 19 Death Cell, Ohio State Penitentiary
Folder 20 Picnic group at Fredericktown, Ohio (May 30, 1909)
Folder 21 Children fishing, Fredericktown, Ohio (1909)
Folder 22 Indian carvings, Smith's Ferry, Ohio (1909)
Folder 23 Children, East Liverpool, Ohio (1909)

Box 11
Folder 1 Family group on rocks, Smith's Ferry, Ohio (1909)
Folder 2 House and family at East Liverpool, Ohio (1909)
Folder 3 Old Caywood house, Wheeler house (July 19, 1916)
Folder 4 Caywood house, Washington County, Ohio.
Folder 5 Caywood house, Hills P.O.
Folder 6 Marietta and river from Harmer Hill, Ohio
Folder 7 Mill at Beverly, Ohio
Folder 8 House 618, Second St., Marietta, Ohio

Section: Views in Wisconsin

Folder 9 Reflector dome and Lake Geneva, Yerkes Observatory
Folder 10 Lake Geneva, from top of Yerkes Observatory, looking east
Folder 11 Yerkes Observatory
Folder 12 2 foot reflector, Yerkes Observatory.
Folder 13 Yerkes group (1907)
Folder 14 Yerkes group

Section: Views in Colorado

Folder 15-17 Chamberlin Observatory (June 8, 1918)
Folder 18 Mountains from Chamberlin Observatory (June 8, 1918)
Folder 19 Clock at Knob Hill Station, Colorado Springs
Folder 20 Cooke camera at Knob Hill, Colorado Springs
Folder 21 Range south of Pike's Peak, from Knob Hill

Box 12
Folder 1 Pike's Peak and range from Knob Hill (June 9, 1918)
Folder 2-3 Pike's Peak and range (June 9, 1918)
Folder 4 Train on Midland Road, base of Pike's Peak
Folder 5 Engine, Pike's Peak Cog Road
Folder 6 Pike's Peak Cog Road, near half-way house
Folder 7 Looking down along Pike's Peak Cog Road
Folder 8 Pike's Peak Cog Road, ascending curve
Folder 9 Manitou and front range, Pike's Peak region
Folder 10 Geology class at Manitou ready to go up to Lake Moraine
Folder 11 Bald Mountain from Lake Moraine
Folder 12 Williams Canyon, Manitou, Colorado
Folder 13 Rocks in Williams Canyon.
Folder 14 Amphitheater, Williams Canyon, Manitou, Colorado
Folder 15 Pavilion at Manitou, Soda Springs.
Folder 16 Geology class at Seven Falls, South Cheyenne Canyon
Folder 17 View from top of Seven Falls, Cheyenne Canyon
Folder 18 Father and Uncle Spence at top of Seven Falls
Folder 19 South Cheyenne Canyon, Colorado Springs
Folder 20 Family group, South Cheyenne canyon

Box 13
Folder 1 Ice in South Cheyenne Canyon
Folder 2 "Needless," North Cheyenne Canyon
Folder 3 Cheyenne Mountain. (June 9, 1918)
Folder 4 Cheyenne Mountain, from the west
Folder 5 Cheyenne Mountain, from Canyon Park
Folder 6 Valley west of Cheyenne Mountain, Colorado Springs
Folder 7 Plains, Colorado Springs, east from Knob Hill
Folder 8 Plains south of Colorado Springs, Cheyenne Canyon
Folder 9 Family group at cabin, St. Peter's Dome, Colorado Springs
Folder 10 St. Peter's Dome, Colorado Springs
Folder 11 Geology class, Red Rock Canyon, Colorado Springs
Folder 12 Geology class in Garden of the Gods
Folder 13 Gateway, Garden of the Gods
Folder 14 Rocks in Garden of the Gods
Folder 15 Balanced Rock, Garden of the Gods
Folder 16 Rocks in Garden of the Gods (Seal and Bear)
Folder 17 Group in Garden of the Gods, at Siamese Twins
Folder 18 Profile Rock, Garden of the Gods
Folder 19 Rocks in Monument Park, Colorado
Folder 20 "Quaker Wedding," Monument Park, Colorado
Folder 21 Cox house and group, Colorado Springs
Folder 22 High School, Colorado Springs

Box 14
Folder 1 On Tennessee Pass, near Leadville, Colorado

Section: Views in the West

Folder 2 Along the Union Pacific (March 1900)
Folder 3 Sagebrush plains, Wyoming or Idaho
Folder 4 Sacramento State House
Folder 5 Ground, State House, Sacramento

Section: Various Views

Folder 6 Oil field, Moore's Junction (F.C. Jordan, photographer: December 30, 1898)
Folder 7 Houses at toll gate, 9 miles from government camp (6 A.M. September 2, 1900)
Folder 8 Multiple lightning flash (F.C. Jordan photographer: August 27, 1904)
Folder 9 208 Club
Folder 10 Mr. Barnhard's observatory (May 4, 1907)
Folder 11 Bi-plane
Folder 12 Red Cross nurse at "Flu" hospital
Folder 13 Indian Mound at Oakmont, beginning of operations (October 4, 1895)
Folder 14 Indian Mound Oakmont (October 4, 1895)
Folder 15 Indian Mound Oakmont, from west (October 4, 1895)
Folder 16 View toward Schoenberger Iron Works in Strip District, from base of P. Ft. W. C. Ry. Bridge (c. 1900)
Folder 17 Pittsburgh fireworks (July 4, 1901)
Folder 18 Phipps Conservatory, North Side
Folder 19 208 Club

Box 15
Folder 15 Perry High School, from Perrysville Ave.
Folder 2 Looking west above Perrysville Ave., up plank road.
Folder 3 Backyard telescope
Folder 4 Residence of Major Speer, Oakmont, Pa., October 4, 1895
Folder 5-6 Parlour, Residence, JEK
Folder 7 Austin Bluffs, Colorado Springs

Section: New Material Added, 2013


Box 18
Folder 16 Thaw Refracter Negatives, March 9, 1972