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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.

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

Keystone Telephone Company Leather Document Holder
Click for closer view Unfolded Leather Document Holder

c. pre-1898 - Related to Keystone Telephone Co. making this item very old (1894-1898). Unknown specific purpose. When folded there is no logo showing. When opened, it displays the logo. Each side has a pocket. Leather is very soft and overall in an extremely nice condition for its age.