Need wheat harvest dates on Channel Coast in 1940

[frankiestein]

Hi......... Well a ball park window, which should be about right would be late august, say 20th to 31st. or a few days into september even.This is around the average time traditionally, dependant on weather conditions. Yes Corn crops have changed a lot since then, but from what Ive seen,the harvesting times remain around the same,unless theres been a hot summer with plenty of early rain maybe. I live surrounded by Corn fields 3 miles from the coast.many differences in the grain crops,are for disease/pest resistance/shorter stems for less wind damage, longer growing times/earlier planting times..... etc & many other variants, but harvesting is & was usually in that 10-14 day window.
Hope this narrows your search a little. someone who has farming records going back from then could confirm, but bear in mind, because a farmer had many fields, doesnt always mean he would have many employees or machines/horses so the harvest could take a while to gather, especially when a WAR is happening overhead! Consequently some farmers cut a while before/after others, but they would usually all drop into this time slot. If your search for details still fails, try going back & forward one day at a time from the guide dates mentioned.
Good Luck! let us know if your search is successful! all the best to you!