In this series are drafts and published copies of articles written by Tombaugh, which relate to the accessibility of chemistry and biology classroom laboratories to blind and mobility impaired students. Some articles were co-authored by her husband, Roy Tombaugh. Also includes a program for Tombaugh’s presentation slides, which were shown during her NSF lecture tour, as well as lists and notes associated with other slide presentations. Drafts are alphabetically arranged by article title and published copies are arranged by publishing date.