Other
- (H. J.) Heinz Co 1 results
- A.D. Marble & Co 1 results
- Adams, Charles J. (Charles Jesse), 1947- 1 results
- Adamson, John Howard 1 results
- Albert E. Deeds Associates 1 results
- Allegheny Cemetery 1 results
- Allegheny Cemetery (Pittsburgh) 2 results
- Allegheny Cemetery (Pittsburgh, Pa.) 2 results
- Allegheny City Society 1 results
- Allegheny County (Pa.) 1 results
- Allegheny County (Pa.) Anniversary Transportation Day Committee 1 results
- Allegheny County Bar Association 1 results
- Alzo, Lisa A. 3 results
- American Hungarian Educators' Association 1 results
- American Window Glass Company 1 results
- Asher, Robert, 1944- 1 results
- Associated Artists of Pittsburgh 1 results
- Aurand, Martin 1 results
- Austin, Heather 1 results
- Åkerman, Rich. (Richard), 1837-1922 1 results
- Baldwin, Henry, 1780-1844 1 results
- Barthberger, C. 1 results
- Beard, Chuck 1 results
- Beatty, Jan 1 results
- Bell, Thomas Kenneth, 1950- 1 results
- Birmingham Union 1 results
- Blackett, R. J. M. 1 results
- Bodnar, John Edward, 1944- 1 results
- Braddee, John F., d. 1846 1 results
- Brown, Robert Kevin 1 results
- Brumble, H. David, 1977- 1 results
- Bucsko, Mike 1 results
- Buffington, Joseph, 1855-1947 1 results
- Burgher, J. C. (John C.), 1822- 1 results
- Burgoyne, Arthur Gordon, -1914 1 results
- Burke, Robert 1 results
- Butler, Elizabeth Beardsley 2 results
- Butler, John Bartlett, 1793-1870 1 results
- Byrne, Kathleen D. 1 results
- Carnegie Institute 2 results
- Carnegie Institute. Department of Fine Arts 1 results
- Carnegie Library of Pittsburgh 2 results
- Carnegie Museum of Art 2 results
- Carnegie Museum of Natural History 1 results
- Catholic Knights of St. George (Pittsburgh, Pa.) 1 results
- Center for American Places 1 results
- Central Council of Polish Organizations of Pittsburgh (Pa.) 1 results
- Chamber of Commerce of Pittsburgh 1 results
- Children's Museum of Pittsburgh (Pa.) 1 results
- Cooper, Douglas 1 results more…