ClipArt ETC
A card-ledger tray

Ledger

A card-ledger tray

A loose-leaf ledger

Ledger

A loose-leaf ledger

"Sectional view of a telephone building. A typical American central office building, showing the efficient arrangement of the various departments." -Hill, 1921

Office Building

"Sectional view of a telephone building. A typical American central office building, showing the efficient…