Area History - Historical information on Phelps county and the Rolla area. Phelps County Election Results - Carol A Bennett, Phelps County Clerk. Election results from 1996 through 1999. University Outreach and Extension - Phelps County - Regional staff members and the County Extension Council, made up of elected and appointed citizens, work together to meet locally identified educational needs. National Register of Historical Places - Phelps County, Missouri. Phelps County History - Formed in November 1857. Phelps County Historical Society - A Missouri not-for-profit corporation, involved in the preservation of Phelps County heritage.