The Breithaupt Hewetson Clark Collection includes the family papers of the Breithaupt, Hewetson, and Clark families, as well as records from the Guild of All Arts in Scarborough, Ontario, founded by Rosa Breithaupt Hewetson Clark and Spencer Clark, and several smaller collections acquired by the Breithaupt family and by Spencer Clark. See the Archives Database for more information about Breithaupt Hewetson Clark Collection.