- Hinckley & Egery Iron Company1
- Hincks & Johnson1
- Hires & Co.1
- Hirschberg Bros. & Hollander1
- Hirth-Kraus Company1
- Hoffman Corr MF'G Co.1
- Holbrook, Merrill & Stetson1
- Holyoke Belting Co.1
- Homer Ramsdell & Co.1
- Hosford & Ketcham1
- Hotel Boyer1
- Hotel Walton1
- Hotel Westminster1
- Howard National Bank of Boston1
- Howard Sanger & Co.1
- Howell & Saxtan1
- Huntington, Hopkins & Co.1
- Huttig Sash & Door Co.1
- Hutzler Brothers1
- I. B. Williams & Sons1
- I. Newman & Sons2
- Iler & Co.2
- Imperial Paste Mfg. and Merchantile Company1
- Imperial Woolen Company1
- Indianapolis Saddlery Co.1
- International Stock Food Company1
- Irving & Casson1
- Isaac D. Dana1
- Island City Bank1
- Iver Johnson Sporting Goods Co.1
- J. B. Barnaby Co.1
- J. B. Plummer & Co.1
- J. B. Shannon & Sons1
- J. C. Johnson & Co.2
- J. Dobbins1
- J. E. Lonergan & Co.1
- J. E. Oppenheimer1
- J. F. Bumstead & Co.1
- J. F. Dietz & Co.1
- J. F. Ryder's Art Galleries1
- J. Fortune & Co.1
- J. G. Smith & Sons1
- J. Griffiths1
- J. H. C. Petersen's Sons1
- J. H. Koppelman & Co.1
- J. H. Newbauer & Co.1
- J. Hartigan1
- J. J. Beals & Co.1
- J. K. & B. Sears & Co.1
- J. Klee & Brother1
- J. Knabb & Co.1
- J. M. Porter1
- J. Maury Dove1
- J. P. Donaldson Co.1
- J. P. Huntoon3
- J. R. Bigelow & Co.1
- J. R. Booth1
- J. R. Westlake & Bro.1
- J. Redcliff1
- J. S. Phelps & Co.1