Qwerty Stevens, back in time

"Robert Edwards Stevens, nicknamed 'Qwerty," likes digging in his backyard when he's in a bad mood. He doesn't dig for anything special-- he just digs to get his mind off things. One day, when he's really angry and has a lot on his mind, he starts digging ... and THUNK! He hits something, a wooden box with a famous signature: Thomas A. Edison ..."