1956 Bufo boreas boreas April 12 Notes from letters T. Paul Maslin at University of Colorado. 27 Feb. 1956. "In regard to the species in this area t the toad is strictly a montane form not occurring below 7000 feet. Its habitat is almost identical to that of B. b. canoris but the largest specimens are often found in the woods surrounding swampy meadows and beaver ponds. I have found them active both by day and by night. The specimens from Eldora were all nocturnal and actively hunting when they were collected. But the specimens from Rainbow Lakes some 20 or 30 miles fart farther north were collected during the day." to RCS 7 April 1956. re: additional specimens sent by Maslin. "This material was collected by students/... and look as though it had been in formalin too long. There are 12 (actually 11) specimens from the warm spring which is located on the Warm Springs Ranch, 10 miles southwest of Fairplay, Park Co., Col and the elevation is about 10,500 feet. All of these speci- mens were collected during the day sometime in the mid- dle of September. The other lot of specimens from Rain bow Lakes were also diurnal and actively feeding around the periphery of the lake. "If your man wants more specific data on how to reac reach the warm spring I can supply him with a map. It is difficult to find."