Scope and Contents A rubber stamp engraved with the name and portrait of Harriet Tubman. Accompanying the stamp is a black felt ink pad and a small bottle (1/3 ounces or 100 cubic centimeters) of black rubber stamp ink. A metal wire is attached to the stamp's white handle, allowing the user to secure the stamp to a permanent station if desired. This stamp was designed and distributed by Dano Wall, Deputy Director of Manufacturing for Adafruit, an open-source hardware company. Wall's inspiration for...