Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 285
I 8;lb|-lrl?Nhl«H«.|.!>|5|rHs|?|5|g|fIili]8 i yvvvvvvvVvVyvWvVyVW ii !i Hi: i; ii i: i ij:i 11111111111 H ft ft ft ft i*i ft ft ft rtt ft i*t ft id A i^i ft ft ft t*i A 1*1 lip Wtf bo
Telegraph
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
