In my area of upstate New York much of the wood was cleared out between building and heating, Most farms that didn't have attached wood lots would have one on a nearby hill side that was nonproductive farm ground for heating. With many places not getting electricity till the 1930's or later and oil fired furnaces going into vogue into the 1940's and 50's with wood being the primary heat source it was actually scare in many areas. Many of the fields that people worked with horses have turned back into actual wood lots as they were/are to steep and rough to work with tractors of any size.
When I look out my windows at the trees that surround my place, almost none of them existed in photos from the 40's. My place was actually a hill side orchard with small hay meadows above me, now it's all treed.