- Gilbert Post Card Company1
- Gilliland, William1
- Glazier, Hiram1
- Glenn, Thomas1
- Gordon, John Brown, 1832-19041
- Grace, Matthew R.1
- Gray, Frank A.1
- Gray, John H.1
- Gresham, Lemuel1
- Gresham, Littleberry1
- H.C. Leighton Company1
- H.G. Woolworth Company1
- H.G. Zimmerman & Company1
- Hagin, David1
- Hagin, Henry1
- Haliday, John1
- Hamilton, E.1
- Hammond, Abner1
- Hanna, William1
- Hannau-Robinson Color Productions1
