The Lorin Asa Merrill Family Papers consist of four boxes containing notes, correspondence, newspaper articles, genealogical data, and religious documents related to Lorin Asa Merrill, his wife, children, and posterity, covering the years 1876 to 1986. The collection is of importance to Merrill family history, Utah State University history, and Cache Valley history.

Box I contains genealogical data on the Lorin Asa Merrill family, including information related to Lorin Asa Merrill, Laura Reese Merrill, and Milton Reese Merrill. Box II consists of documents pertaining to Asa June Merrill, Harold Reese Merrill, and Dean Reese Merrill. Box III is a continuation of Dean Reese Merrill's collection, and also includes Laura (Dot) Merrill and Lorin Christian Merrill's files. Box IV contains Liona Merrill's material and also includes information collected from family histories, notes, and sketches used in preparing the Lorin Asa Merrill and Laura Reese Merrill family book (a copy of the book is included).

Other Merrill family material can be found in MSS # 90 and MSS # 119, especially information on Laura Reese Merrill. Family histories pertaining to Lorin Asa Merrill, his wife, children, and posterity are available in the Lorin Asa Merrill and Laura R. Merrill and Family book (929.2 M552-M). Also, material relative to Lorin Asa Merrill can be found in a book he coauthored with R. J. Evans and Lorin Asa Merrill entitled County Agent and Farm Bureau Work in Utah, 1918 (University Archives 19.4, Vol. 7, No. 3).

A separate collection of photographs, albums, and scrap book materials pertaining to the Merrill family (some of which were included in the Lorin Asa Merrill and Laura R. Merrill and Family book) can be found in the Photograph Archives, where they are housed for preservation purposes.