Bonner was my first Post Office of the day (I missed Clinton so we will do it another trip). The first post office was established in 1888 with Lane Paskill as postmaster. The town was named for Edward L. Bonner. Bonner's Ferry, Idaho was also named for him.
E. L. Bonner was a partner in the Eddy, Hammond and Company when the Northern Pacific Railroad awarded them the lumber contract in 1881. They went on to build the Blackfoot mill, it began operating in 1886. The town of Bonner has been closely linked with the lumber industry. It was dealt a blow when the mill was shut down in 2008.
Other Links of Interest
http://www.bonnermt.com/nhistory.html Bonner History
http://missoulanews.bigskypress.com/missoula/timbers-back-in-bonner-montana/Content?oid=1542936 Timber's Back in Bonner
Bonner is located in southwestern Montana, just east of Missoula on I-90.