Is it true that there is a law on the books in Kentucky which states,
"No female shall appear in a bathing suit on any highway within the
state unless she is escorted by at least two officers or unless she is
armed with a club." Can you varify or deny the existence of this law?

Hello.

No, it's not true.

Although hundreds of web sites claim that such a law exists, it doesn't.  

However, such a law actually DID exist at one time.  It was Kentucky
Revised Statute 436.140.  The law was repealed, though, effective
January 1, 1975.

From Kentucky Revised Statutes:

436.140 Repealed, effective January 1, 1975.
Abstract: 436.140 Repealed, effective January 1, 1975. Catchline at
repeal: Appearing on highway in bathing garb.
http://www.lrc.state.ky.us/krs/436%2D00/140.pdf

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search strategy:
kentucky statutes search: bathing

I hope this helps.