Sterling Baking Powder - Elephants. Although not specifically stated, these are probably Jumbo and Tom Thumb, the largest and smallest elephants in Barnum's circus, R-adv lists 14 exhibitions where the product won 1st prize from 1879 to 1880. F. Brought $43.00 as Lot 019.05 in Trade Card Place Auction 019 on 1/10/2001.