This was given to me by Tim Stowell, a co-coordinator for the Wisconsin GenWeb page.
The abbreviation (ch) stands for courthouse. The 1939 reference is a
United States Official Postal Guide - Part 1 - July 1939 - 5th Series - Vol
2, No. 1. I picked it up at the World's Longest Yard Sale a few years ago
for 25 cents.
The 1886 reference is missing its cover and first 13 pages so it's a bit of
a mystery. It appears to have been published by an independent
organization as it has advertisements in the back of the book.
In 1886 there were 1,478 postoffices in Wisconsin
Marathon County Post Offices in 1886
Black Creek Falls
Spencer, Unity and Wausau were identified as Money Order offices. Wausau
was further identified as an International Money Order office.
Post Offices in Marathon County in 1939.
Athens - R575 P153
Brokaw - P75
Colby - R373 P207
Dancy - R261 P20
Edgar - R683 P125
Elderon - P58
Fenwood - P54
Galloway - P20
Granite Heights - P10
Hamburg - R170
Hatley - R333 P27
Knowlton - R209 P20
Marathon - R475 P142
Milan - P40
Mosinee - R733 P282
Naugart - R115
Norrie - P35
Ringle - R177 P10
Rothschild - P96
Schofield - R202 P156
Spencer - R389 P104
Stratford - R596 P154
Unity - R233 P71
Wausau (ch) - R1432
R - boxes on rural routes emanating therefrom
P - post-office boxes at offices not having city letter-carrier service
S - boxes on star routes emanating therefrom