Artifact Details Title Adding machine Catalog Number X973.88 Type Physical object Manufacturer Allen, R. C. Place Manufactured Grand Rapids, Mich., U.S. Identifying Numbers Model number 75 Serial number 1331392 Dimensions 10 1/4 x 10 3/4 x 16 1/4 in. Category Calculator/mechanical Credit Gift of Alan Robbins Lot Number X973.88