Ken, I hope Roger answered your question. I like the search feature in Google books when I am looking for a specific word, but I read books from the downloaded pdf on my computer.

NH, I have seen 36' sawn beams. A house I salvaged had common purlins hewn on the visible sides with the top surface vertically sawn. After the purlins were off of the building I noticed two of them were bookmatched...Someone had hewn a 5"x7" then it was slit down the middle and used as full length common purlins. There must have been a few mills which could cut 40', though as you say, long sills and plates were often hewn, even when every other piece of lumber in the building was sawn.

Jim