We actually had an opportunity to restore a chicken coop at Weir farm national Historical Park, in Wilton, CT. As we could decipher, this building was designed and built, although it's maintenance seemed "whatever we got". The building was from the 1930's, although there is an earlier c1870 chicken coop/ice house adjacent. The only reason these buildings have or will be saved is by there juxtaposition with other significant structures and surrounding landscape. Otherwise, they would have melted into the ground. that's all i've seen, but if you need more, let me know. Rob Cagnetta