ELK Karstun 1955 Buffo sp. recording data July 25 Experimental recording at museum, Yosemite Valley of the role "release notes" various toods. magnetite portable tape recorder first used. machine noisy and recording my voice too table. ELK #771 Camp 19, Yoz. Valley, Mariposa Co. Calf. Buffo brossa holoikilus Food placed on table 4-6" from hand mike and grasped behind forelimbs between thumb and index fingor. Room temperature 24° C. ELK #747 Buffo conurus NE side Highland Lake, 8500 ft., Alpine Co., Calif. ELK #694 Buffo (brossa) ideal Deer Springs Valley, 5200 ft., Inyo Cr., Calif. These notes are not unlike the weak notes uttered by a few males I got at Deer Springs June 13, 1955, although the call notes of a male are lower Aug. 26 - Use of museum sp. Pentium recorder (non portable) Room temp. same. Note tuner recording fidelity. ELK #807 Buffo brossa holoikilus . Yosemite Valley 4000 ft. Sept. 4 ELK #820 B. conurus from Tioga Pass, 9900 ft. Mono Co., Calif. Food cold at first (6:45 A.M.) but warmed up to room temperature due to hardling.