Skip to main content

358 - Installation & Operation Instructions, 2040 Manual Switch, 1870 Automatic Switch, 3460 & 3890 Connector Boxes, 1956

 File — Box: 104, Folder: 228

Dates

  • Creation: 1956

Repository Details

Part of the Science History Institute Archives Repository

Contact:
315 Chestnut Street
Philadelphia PA 19106 United States
215.873.8265
215.873.5265 (Fax)