Thaler 1959 Journal p. 5 Oct. 2 Berkeley to Sage Hen Creek, Nevada Co., Calif. Left Berkeley with Dr. Benson and Bill Maher at 8:15 A.M. Dr. Benson is taking his Mammalogy class on a field trip. We arrived at Sage Hen Creek about 2:00 P.M. We stopped along Rt. 89 just beyond Prusser Creek and I set out 4 gopher sets. I was able to borrow a University car, the kindness of Dr. P. R. Verdine's vehicle, and drove to Boca Reservoir, Nevada Co. I set out 6 gopher sets on a level area above and east of the dam. On the way back I set out 8 sets 1.5 mi. (approx.) by road from the dam to Rt. 89. Checked my set along Rt. 89 and got one Thomomys monticola. Oct. 3. Sage Hen Creek, Nevada Co., Calif. To take up monticola Up early this A.M. and off to gopher sets over near Boca Reservoir. Got just one north east of Boca. Back to Sage Hen for breakfast. After breakfast Dick Banks and I drove north to Sierraville and hence NW along the west side of the valley. At Lacey we took the right fork and continued north up the valley. We stopped at a point 1.5 mi E of Calpino and wandered around looking for gopher signs on the left (W side) of the road. This area is covered sparsely by Sagebrush and grass. It appears overgrazed. Saw no sign of gophus but did see diggings of moles. A mile and a half north we saw some gopher mounds