For in-town industries, I recommend looking for the old Sanborn Fire Insurance maps of Newport/Dexter/Foxcroft (you can find them through the Library of Congress website). For more rural industries, your best bet would be the topographical maps (Historic Aerials has a lot of them, including old top-down aerial photography).

I am a member of the Farmington Historical Society (next town over). Big lover of history, and we had the B.F. Watson Carriage Makers in Farmington Falls. Would love to chat more. I’ll contact some people who may have connections to Chesterville if you’d like more info.