- William Pynchon, significant potential for expansion
- Elizur Holyoke, " "
- Mary Holyoke
- Caleb Strong, " "
- Primus P. Mason, " "
- Domenic Sarno, " "
- Miles Morgan, " "
- Evelyn Chesky, " "
- Elizabeth Towne, " "
- Horace Smith, " "
- Anna Burns Sullivan, labor organizer, a key New England figure in the textile workers strike (1934), among the largest in US history
- Emma Brigham, first woman lawmaker of Springfield, one of the first of the Commonwealth
- George Walter Vincent Smith, philanthropist, merchant trader, carriage-maker, and collector of namesake museum specimens
- George Sylvester Taylor, first mayor of Chicopee, significant potential for expansion
- William B. C. Pearsons, first mayor of Holyoke
- List of mayors of Holyoke, Massachusetts, 33/44 missing, not all necessarily significant contributors but still good amount of missing information
- List of mayors of Springfield, Massachusetts, 29/55 missing, " "
- List of mayors of Chicopee, Massachusetts, nearly all missing, " "
Places
- Neighborhoods of Springfield (exist but may need expansion/photos/documentation)
Economy/Companies