Road runs up the valley of Black 's Fork . After 12 miles, Fort Bridger, in N . lat.41°18 ' 12'', and W. long. 110° 32' 23'', on Black 's Fork of Green River. Commands Indian trade, fuel, corn ; little grass. Post - office, sutler's store, grocery, and other conveniences. Thence rough and rolling ground to Muddy Creek Hill ; steep and stony descent.Over a fertile bottom to Big Muddy Little Muddy Creek which empties into Black 's Fork below Fort Bridger . At Muddy Creek Station there is a Canadian, provisions, excellent milk ; no stores.A .M . P.M .  25 8 30 , 12 15 Aug. 23