Accounting machine.

Accounting machine.

Accounting machine.

23rd Street and Madison Avenue. Photo of accounting machine at Metropolitan Life Insurance.

23rd Street and Madison Avenue. Photo of accounting machine at Metropolitan Life Insurance.

[Machine.]

Simplex machine.

Simplex machine.

Small machine.

Large machine.

[Machine room.]

Precision Machine Co. View of inserting movement in machine.

Berg surfacing machine.

[Detail, machine part.]

Simplex machine.

Machine closed.

Small machine.

Small machine.

Large machine.

Postage stamp slot machine.