Hi Larry - county libraries are a good source of information sometimes and also County Historical Societies - they often publish magazines that are indexed.State Archives are usually on-line and have forms you can fill out and send to them with the request.Sometimes different groups ask one to pay for copies per page...and sometimes postage. Another good source: Allen County (but can't remember the web site - will try to find it. Another good source - local Latter Day Saints locations...usually one in a county - connected to the Mormon Church. They are BIG on genealogy.
Also try: FIND A GRAVE - it is amazing what one can find in locating cemeteries and information - especially more recent (late 1800's +
Also try USGENWEB BY STATE AND THEN COUNTY AND THEN BY CITY OR TOWN.
I ALSO USE UNITED STATES 1895 ATLAS to confirm whethertown was in existence and if there were a post office and where it was located in the state, etc.You can check it out on the internet free.Try State and then County. There is a list of towns in the county.
And I still use www.google.comADVANCED SEARCH and EXACT PHRASE like you could type in FRENCH MILLS and see what comes up - sometimes have to work through a lot of web sites, but sometimes I finally hit on one I need. Try also the same as above with FT. COVINGTON.