Pressing plant for Capitol Records, Inc.located in Scranton, Pennsylvania. In operation from 1946 to 1973.
In 1969 Capitol started transferring operations from Scranton to their newly built Capitol Records Pressing Plant, Winchester plant. but pressing continued until 1973 when it shut down.
In November 1973,the plant began operating under new ownership as North American Music Industries.

Identifying vinyl records pressed by Scranton:
A 1 1/2" inch diameter press ring on labels. (Not a unique feature since the other Capitol plants also use this configuration).

Pressings up to 1963 have an anvil / lathe shaped " ⌂ " symbol stamped in the runouts.
Pressings from 1963 to 1973 have a triangle with letters I over AM inside stamped in the runouts.
The "IAM" stood for the International Association of Machinists' union whose members worked at the Scranton plant.

Pressings from 1973 or later when the plant was operated by North American Music Industries' returned to the anvil / lathe stamp in the runouts.

A keeper of the Capitol Scranton Plant Facebook Page (site below) identifies the "anvil" as the U.S. Capitol dome, tying in with the Capitol Records logo.

Additionally, some Scranton pressings may also include a stamped Ampersand (&) in the runouts, indicating
stampers originating from stereo cut lacquers..

See images on this profile page for examples of the anvil and IAM symbols, as well as the Ampersand.