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Subject Terms
- Book collecting -- Pennsylvania -- Pittsburgh
- Collectors and collecting -- Pennsylvania -- Pittsburgh
- Frontier and pioneer life -- Pennsylvania -- Pittsburgh
- Glass manufacture -- Pennsylvania -- Pittsburgh
- Indians of North America -- Pennsylvania -- Pittsburgh
- Photography -- Pennsylvania -- Pittsburgh
- Prints, American -- 19th century -- Collectors and collecting
- Shipping -- Pennsylvania -- Pittsburgh
- Watercolor painting, American -- Pennsylvania-- Pittsburgh
- Wills -- Pennsylvania -- Pittsburgh.
- Allegheny Engine and Hose Company.
- Allegheny Valley Railroad Company.
- Bank of the United States (1816-1836). Pittsburgh Branch.
- Daughters of the American Revolution.
- Historical Society of Pennsylvania.
- Pennsylvania Railroad.
- Pittsburgh Amateur Photographers' Society.
- Pittsburgh Gas Works.
- Pittsburgh Glass Works.
- Sharpsburg Bridge Company.
- Washington & Jefferson College (Washington, Pa.).
- Ammon, Edith Dennison Darlington, 1862-1919
- Bouquet, Henry, 1719-1765
- Brackenridge, H. M. (Henry Marie), 1786-1871
- Darlington, Benjamin, 1790-1856
- Darlington, Mary C. (Mary Carson), 1824-1915
- Darlington, Mary Carson, 1852-1925
- Darlington, O'Hara, 1849-1916
- Darlington, William M. (William McCullough), 1815-1889
- Hemphill, Mittie
- McCullough, Jane, 1766-1821
- O'Hara, James, 1752-1819
- O'Hara, Mary Carson
- Darlington family
- O'Hara family
- Allegheny County (Pa.) -- History
- Egypt -- Description and travel
- Europe -- Description and travel
- Fort Pitt (Pa.) -- History
- Ireland -- History
- O'Hara (Pa. : Township) -- History
- Pittsburgh (Pa.) -- History
- Pittsburgh Region (Pa.) -- History
- Sharpsburg (Pa.) -- History
- United States -- History -- French and Indian War, 1755-1763
- Entrepreneurs
- Lawyers
- Military personnel
- Public officers
- Clippings (Information artifacts)
- Color prints (Prints)
- Correspondence
- Diaries
- Diplomas
- Envelopes
- Essays
- Land surveys
- Ledgers (Account books)
- Manuscripts (Document genre)
- Maps
- Obituaries
- Photographs
- Receipts (Financial records)
- Sketches
- Souvenirs
- Watercolors (Paintings)
- Business and Industry
- Personal papers
- Women
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