Letters and other materials written by and to members of the Robertson and Corbett families in the 19th century, plus transcripts of some letters, along with other materials.

Materials related to several old Portland families, primarily, Robertson, Burns, Couch, Failing, Corbett, and Wood. Also included are Adams, Lewis, Reed, Warren, and Wilson. Photographs document individuals, family groups, and activities. Numerous photographic albums are also included. The documents are primarily made up of correspondence between individuals, as well as ephemera and diaries.