DARKNESS ON THE EDGE OF TOWN US LP variations: A revision to Decoding Two- or Three-Letter Matrix Hand Etchings on the Early Pressings — "PPP" was NOT a code for Columbia Records' Pitman but for another New Jersey pressing plant!

The oldest American company for children's
music turned out to have helped Columbia's
Pitman plant for pressing Springsteen's 4th
album (image taken from Discogs). 

Early vinyl copies of Springsteen's original albums up to THE RIVER (Columbia PC2 36854), the fifth released in October 1980, were pressed at three record-pressing plants Columbia Records owned and located in Santa Maria, CA, Terre Haute, IN, and Pitman, NJ. However, DARKNESS ON THE EDGE OF TOWN (Columbia JC 35318), his fourth, was the exception due to the temporary suspension of production at the New Jersey factory caused by labor strikes between April 2 and May 17, 1978, when this long-awaited album was slated to be released in late May (cf., The album was slightly delayed to be released on June 2). As a result, several pressing plants of non-Columbia Records were subcontracted to the Pitman to prevent the inevitable shortage of album supply, mainly in the East Coast market.