- Byrne, John1
- Carl Zeiss Jena5
- Clark, Alvan Graham, 1832-18972
- Collin Rhodes Factory7
- Columbia College45
- Columbia Railway Gas and Electric Company1
- Council on International Non-Theatrical Events1
- Cox & McElveen1
- Crowson, Charles Mason, 1916-19731
- Dave Drake2
- Dave Drake (c. 1800 - c. 1874)1
- DeVeaux, James, 1812-18441
- Dollond, John, 1706-17613
- Dollond, P. (Peter), 1730-18201
- Dougherty, Guy1
- Drew Ruddy2
- Durand, Asher Brown, 1796-18862
- Eastman Kodak Company1
- Elijah Hall (c. 1791-1888)1
- Eliza Shuler1