Leach's Ballad book prints a version from Kentucky (Wyman) and Barry's 1935 "monograph" is a one page look at the ballad and two short fragments- neither resembling Clayton's version which came from Massachusetts. His version is based on Linscott's version from MA- with an added chorus.
The version of Polly Wand in The Diary of the American Revolution, 1775-1781, page 239, 240 by Frank Moore, John Anthony Scott- 1967 and also Sing Out, 1967- is Linscott's version with the name changed to Polly Wand. It is misleading and dishonest to suggest the version was sung during the Revolution with no proof and then change the name without saying anything. Since Linscott's version was copyrighted in 1939 Clayton probably couldn't say where he got it.
I only have access to two more missing versions (by asking for copies) but there are over 10 more that have been collected. That's a total of about 85 versions.