Abaculi
found digital texts & images, material scans, & occasional snapshots
Pages
Home
The Abaculi Project (poems & images)
Blue Slag Press
Friday, March 4, 2011
Multiplex Printing Telegraph (1920)
Specifications for the Multiplex Printing Telegraph System: Theory and Operation
(Western Union Telegraph Company, 1920).
Newer Post
Older Post
Home
