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A record of customers, dates of services, fees, paid invoices in a bound ledger.
Shown is a page for Hans Erikson and an invoice for James Russo.

Photograph of the Mill Power House taken in 1902 showing huge steam-powered generators, electrical distribution equipment, wiring, and the operators of the equipment.

Note: ages of employees, employee sitting on top of one of the generators and on…

Photograph of part of the Mill electrical power plant showing supervisors and staff. Generators and electrical distribution panels / switches are shown.

Used by the Boston Edison Company in Maynard