Dear Mr. McGowan,
I am doing research on my mother's family. My maternal grandfather was James Conway who worked at Midvale Steel in Nicetown. I found a photo of him with a group of his co-workers. There is a sign in the back that reads "Wissahickon Tool Works Inc., 27 Working Days, May 3rd - June 6th From Date of Power to 1st Set of Recoils." The date of 6/6/41 was printed at the bottom so the photo may have been taken upon completion of a goal the workers had attained. Let me know of your interest.