After the connection between insulin and diabetes was announced in 1921, several pharmaceutical firms hastened to bring insulin and related materials to market. One such was the Eli Lilly & Co. of Indianapolis, which adopted the term Iletin for its insulin. This turned wood canister holds a glass ampule made to contain Lilly U-10 Iletin brand insulin, 5 cc., 50 units. The label refers to patents of Oct. 9, 1923 and Dec. 23, 1924.