The Lawrence Tibbett Collection was assembled and donated by his son, Richard M. Tibbett. The recordings in the collection are primarily privately issued 12" sound discs, both 78 rpm and 33 1/3 rpm. The collection also includes 10" single-sided discs recorded for the Victor Company, 1 7" tape reel, and written materials consisting of a set of 13 index cards with handwritten notes in pencil, photocopies of pages from published articles by Tibbett, and photocopies of two typed inventory lists of the collection prepared by the donor.