None.
An article clipping from the New Hamphire Transcript regarding RSW's exhibition at the Deerfield Academy (1932)"When Corn Is Ripe" is not mentioned specifically but was one of the 10 'crayon drawing' noted (highlighted) at the end of the article.
This chalk drawing is owned privately.
There also exists an oil painting of the same scene. It's current whereabouts are unknown at this time.
This piece was exhibited at the 1928 J. H. Miller Co. Galleries Exhibition
along with 37 other paintings and chalk drawings. Click on the article to the right to see the full article.