North 23 (original) epn Jan 29, 1939. that persons looking for this type locality, if possible, take with them an altimeter as the land slopes gently at first and then takes a sharper grade, but the bottom of the canyon which [illegible] was in at the time has a gradual slope. If further data is wanted concerning the above material I refer you to "Mammals of the Mexican Boundary" Bulletin #56 of Smithsonian Institute, United States National Museum" by Edgar Alexander [illegible].