B52, Short answer...Skennertonicon heavily researched the L-E pedigree. Lots of useful and interesting data. Stratton used previously published data and a very extensive poll of collectors to gather data.

Even shorter, Stratton's books were meant to be primers for the new collector.

Both authors printed the very best info available at the time. Through the internet collectors have made some minor corrections and made some interesting finds.

Buy Stratton first, then Skennerton.

Brad