‘digits’ historical pictures (exact matches)

McGill Cash Register Patent Model
McGill Cash Register Patent Model
Mendenhall's Practical Calculator
Mendenhall's Practical Calculator
Davies Adding Machine
Davies Adding Machine
Haines Calculating Machine Patent Model
Haines Calculating Machine Patent Model
Carroll Adding Machine
Carroll Adding Machine
Holman Adding Machine
Holman Adding Machine
Fig. 10. Outlines of the Patterns of the Digits of Eight Persons, Taken at Random
Fig. 10. Outlines of the Patterns of the Digits of Eight Persons, Taken at Random
McGill Cash Register Patent Model
McGill Cash Register Patent Model