Scope and Contents From the Item: The first part of this volume (pages 1 to 87) describes Rehn's 1919 expedition through the southwestern United States, July 22nd through September 20th. Journal entries date from July 20th to September 24th. The expedition began in southern Colorado (La Junta), and continued toward Albuquerque, New Mexico, then westward into the Mojave Desert and the Arizona/Nevada/California border. After about two weeks in that region, the expedition moved northward along the California/Nevada border,...

Scope and Contents This volume contains Rehn's field notes from his 1956 Orthoptera survey (pages 1 to 88). Journal entries date from July 27th to September 25th. Rehn began collecting on August 1st in Yanktown, South Dakota. Over the course of the month of August, the survey continued through the Dakotas, Montana, Idaho, Nevada, California, Utah and Arizona. Rehn then spent two weeks at the American Museum of Natural History's Southwestern Research Station in Portal, Arizona, and collected in that...