Operating Instructions for the Scott Hydro-Pak By n/a Books / Paperback Sports & Recreation › Other Sports Publisher: Scott Aviation Corporation, January 1956 Price $41.75 Free Shipping Send to a friend Used - Good Good condition. No date stated; ca. 1956. (swim, swimming, scuba, diving, aqua lung) $41.75 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.