Creator
- O. Pierre Havens.1
- O.M. Styron and Co.1
- O.T. Bennett's Studio (Indianapolis, Ind.)1
- Ober.1
- Obermuller & Son (N.Y.)1
- Ochs1
- Ocmulgee Hospital1
- Office of the Rec. Secretary Georgia Medical Society1
- Ogden, Woody.1
- Ohio Bell Telephone Company.1
- Oklahoma Card Co. (Oklahoma City, Okla.)1
- Oliphant, Mrs. (Margaret), 1828-1897.1
- Oliver, Paul.1
- Olivers, Thomas, 1725-1799.1
- Omdha, Laucasta.1
- One who loves him in Georgia.1
- Oppenheim, E. Phillips (Edward Phillips), 1866-1946.1
- Orange News Co.1
- Oregon Pharmacy (Greenwood, S.C.)1
- Original Fowler Studio (Philadelphia, Pa.)1