Where does everyone find these nice large pieces of wood to put on your
lathe? In Denver, it seems we are limited to what little woodcraft or
rocklers has on hand. All of these are generally 6x6x3 or maybe if lucky
8x8x3.

I've done a few of these and now I'm ready to move on. However, short of
getting a chainsaw and finding a scrape pile or visiting a neighbors
yard when they are away on holiday, there is little to be had that is
any good (unless you want cottonwood).

Do you find stuff on ebay? or are there suppliers that have larger than
normal chunks for turning?