A black and white photo of a 50, 000 gallon capacity which is written on the tank. Also, on the tank are the words, "World’s Largest Tank Car, Union Tank Car Company, Mobil-flame LP Gas, Shipped to Good Housekeeping Gas Co., Jacksonville, Florida, Union Tank Car, UTLX 83699, CAPY 263000, LT WT 176700 New 3 63." On the back of the photo, there’s a stamp that reads, "Mobil Oil Corp., 150 East 42 St., New York, N.Y. 10017, RM. C-1206." Also, written in pen there’s a number that reads, "5498-41."