There are two newspapers in that area. One of these might have been started by Jacob.
Upper Country Report, Box 9, 155 Superior St., Cambridge, ID 83610, 257-3515
Weiser Signal-American, http://www.ruralnetwork.net/~newsroom/
, Box 709, 18 E. Idaho St., Weiser 83672
The Snake River Heritage Center, 2295 Paddock Avenue, Weiser, ID 83672-1195, 208-549-0205 also might have that info. Successful Searching!