See his explanation.
" Ok ... Mikey obviously likes "Sanford and Son" way more than anyone else in the world
So I hereby reveal the source of "219" ... I apologize to you who sent in your guesses, now that I realize how obscure the source of my favorite number is. I was certain that at least 5 people would guess correctly, but I was wrong!
So, here is the source of 219, and below it, details for the NEW contest to give away the FULL 219 Content Inventory to 5 lucky webmasters!
Fred G. Sanford - Sanford and Son, September 15, 1972
Fred dreams that he was riding a train to China. "Lucky Lucille's" book on the meaning of dreams lists riding on a bus or train on page 219. And the interpretation of the dream is "good fortune will smile on you this day." So, Fred heads down to the pool hall, bets a dollar on "the numbers" and wins $600 ("Six Big Ones") when his number, 219, is the winning number. This is the source of 219. Ok, maybe this was a bad idea for the contest
"