I fixed the access issues on the website

July 1, 1920 American Machinist published an Ordnance Salvage Board Surplus Property Sale of almost 75,000 pounds of Spec. Shape Gun Steel from the A.H. Fox Gun Co. with C .15-.25%, Mn .5-.7% and S & P < .06% - AISI 1020 and likely frame steel
https://books.google.com/books?id=ezRMAQAAIAAJ&pg=RA1-PA409&lpg