Koford 198 Cynomys ludovicianus August 28, 1955 Mr. Cache, Oklahoma. about 2 yrs. ago no dogs left to W. of creek N. of road. This year (since Jan. 1) western area reoccupied, to about 400yds. W. of creek. Small expansion to E. both N & S of road. || SCS holds a range school here & may have dropped towns in past. They have at least one transient in C. L. area (Fullington Flat). || Three cases of birds being seen far from towns. C. L. saw one stop Scott [illegible] One seen near headquarters, 3/4 mi S.W. of official town. Another seen (near the one) near Stratum Flat, 3-4 mi from a town. Mr. E. said the one seen was not. Scott seemed to be an adult, not young. All these wanderers seen in June-July, but no new colonies found. Why not? - hundreds of acres of apparently suitable ground. || At N. side of official town, native hay some times mowed. When ground drouded, mainly due to dogs, thinnes C. L. || All years last 3 years were droughty (this killed many blackjack oaks). New bison bulls averted, about 1200, too many weeds (Corydalis especially prominent) & "robin weed" (Eudelia ?). In 1951 grass especially good due to favorable district moisture. Whole refuge is grazed. When hay cuts a mid Where grazing heavy, tall grasses reduced while Baca increased. Where (Andropogon scoparius) formerly nearly pure Baca, under light grazing much little bluestem horse mane in, & some little bluestem. Greenwald says that after little blue- stem comes big bluestem & switchgrass. In some areas there tall grasses 5' tall & dense, & mulch their (mostly dampen sites now). || Mesquite trees come in when grazing heavy (these poisoned with oil many sites), & some say mesquite asso. with prairie dogs (Jack Matthew, local SCS man, for me). Ex- amples are town at Fullington Flat, & on 4 mi. S. of Cocheon W. side road. || Brace Mtn. (Oklahoma - Allan) town mostly in And. grass mixed with Baca. [illegible] Much evidence grazing there + no evidence further encroachment of tall greens from edges wally. Plenty of false Burdock for C. L., I think. Probably all that Allan & Allan observed was plant growth, not