There are a lot of images on these pages, please be patient when downloading.

I invite you to click on the small picture to see a larger version.
These photographs are not to scale


Illustrated Booklet of 24 Pages

Closeup of cover and dial inset

c. 1923 - This booklet discusses the automatic switching equipment at various office locations. - NOTE: What I find interesting is the front and back cover which depicts the Main Exchange and the Race Exchange buildings. Notice both locations are displayed on the telephone dial centers.


Keystone Business Envelope

Front of Keystone Telephone Co. Business Envelope Back of Keystone Telephone Co. Business Envelope Closeup of Keystone Telephone Co. Return Address Closeup of Sesqui-Centennial Stamp on back of Keystone Telephone Co. Envelope

c. 1925-6 - This envelope is special as it was used in celebration of the Sesqui-Centennial (1926) of Philadelphia.


Keystone Envelope

Click picture for Close up

Unused stamped envelope. Likely provided by Keystone with communication requiring a response.


Keystone Employee's Insurance Policy

Click here for closeups of both documents Life Insurance Policy

c. 1925 - It appears the Keystone Co. of Phila. provided their employees with life insurance. This policy is in the amount of $700.
I find it interesting that an insurance policy by Travelers Insurance even has a Keystone logo on it.


1927 Keystone Red Book

Very small. Measures 2 3/8" X 3 1/8" - Inside first page top reads MEMORANDA with the rest of the pages blank for entries.


Keystone Telephone Co. of Philadelphia Paper Receipt

Paper receipt dated Jan. 19, 1901 for 3 months telephone service in Norristown, PA. Looks like their receipts for 1901 must not have been available yet.


Automatic (dial) Service Introduction and Directions & Rates Pamphlet

Click to See Larger Example For Close-up Click Here
Click to View Larger Pic Directions Rates More Rates

c. 1919/1921 - Note pamphlets picturing dial candlesticks. They are Automatic Electric models with the "A" in the switchhook having an early "sunburst" type dial. Likely very early examples with the sunburst center later being replaced with the porcelain Keystone disc and the "A" hook replaced with the Keystone.