#oh this!! #ca mini #warding #awayq #tsuchi #moca oreo #emotears #trackpad #ah son #organon
Link #history #vintage #slide rule #vintage slide rule #antique #chicago #ephemera #family ephemera
Link #circular slide rule #slide rule #mathematics #history #john w nystrom #philly #philadelphia
Link #tomboy #taming a tomboy #slide rule #spanking #magazine cover
Link #victor #tallymaster #adding machine #calculator #abacus #slide rule
Link #howard university #studying #slide rule
Link #slide rule #pickett #mathematics #engineering
Link #to read #slide rule
Link #slide rule #coffee table