Model 30 Calculagraph.

[Russ Kirk]

It is a Model 30 Calculagraph.
I found it in a local antique store for the reduced price of $79.

The Model 30 is the AC powered version and keeps excellent time. 
As expected the ribbon had dried out so that is a future project.

I know it was superseded by the Model 33 in 1957. 
Can any tell me the approximate time frame when these were made?

[paul-f]

Russ,

You can get some info on the early years by re-reading your April Singing Wires!

[Russ Kirk]

The article that Gary wrote is excellent. 
What a coincidence that article came out and I found the Calculagraph soon after.

The TCI Library has great CalculGraph documents:
1939 article written by Abbot.
BSP 030-101-101 issued in November 1935.
Scan of a toll card.

Just to clarify, what I am seeking is if anyone knows the production years for the Model 30 Calculagraph.