1946 here, started splitting firewood logs in 4-foot lengths when I was 15, for a house lot clearer in MA. Fast-forward 50 years of family upbringing, bought 37 acres of woods in a hill town, built a Moosehead cedar log home over 2 years weekends and eventually retired there with wife and her John Deere chainsaw. All the trees from land clearing.....yep, 4-foot lengths, split by hand and stacked, being burned at 3-4 years seasoned. Now, at 75, still splitting those 4-footers by hand, 4-5 cords per year, while also giving away at least that many more, unsplit 4-footers, the stringier ones, to some 5-6 other woodburners around town who choose to go the power woodsplitter route after they cut 'em shorter. Have 14 cord split-and-stacked 4-footers always on hand, so wood is seasoned average 4 years to burn. Use only wood for heat in a Lopi Leyden stove, except when gone to Maine snowmobiling for weeks at a time, then it's 48 degrees on the propane thermostat. Keeps a guy young and healthy!