Artifact Details Title 100 year calendar 1945 to 2044 Catalog Number B1684.01 Type Physical object Date ca. 1944 Identifying Numbers Other number B231.82 on sticker on back Dimensions 1/4 x 6 3/4 x 8 in. Category Calculator/mechanical Collection Title Gwen Bell artifact and book collection Series Title Pre-computing artifacts Lot Number B1684.01