Authorities said she handed out at least a thousand dollars. Spokane is in Washington state.
A mysterious woman hopped aboard Spokane Transit Authority buses Thursday, greeted passengers with "Merry Christmas" and handed each an envelope before stepping off. The envelopes contained a card and a $50 bill.
The scene was repeated on several other buses.
The secret Santa did it so quickly that descriptions of the woman varied among surprised passengers.
Full story: Bus Riders Get $50 Gift From Anonymous Woman (AP on TheDenverChannel.com, Dec. 22, 2006)