While I don't know what maps are on-line, I do know that there are 1855 and 1870 Atlases which show property owner information for Guernsey County. 1855 appears to be the earliest available. Liberty Twp is north of Cambridge in what (if I'm reading this right) appears to be in Range III, Township III of the US Military District. The only town which appears on my map (which, unfortunately, is not dated but probably 1870) is New Salem in Section 1. The town of Liberty appears to be just northwest in Wheeling Twp., Range III, Township IV. The State Auditor of Ohio has on-line the "Ohio Lands Book" which may be useful. The site is http://www.auditor.state.oh.us/ Tom Bay, Columbus, OH