Artifact Details Title Dause Bibby and Frank Binswanger Catalog Number 102722579 Type Still image Description B&W image of Dause Bibby and Frank Binswanger with large scale Abbacus Recto bottom: "... meet the original calculator" Date ca 1960 Category Identification photograph Collection Title Jeffrey Chuan Chu Collection Credit Gift of Mr. Jeffrey Chuan Chu Lot Number X5593.2010