On his routine letter-carrying route, postal worker George Knapp, received an odd (and living) piece of mail. Knapp found a young 2lb kitten sitting inside a public post box in Boston, along with the regular letters and boxes. After being checked out by the MSPCA, it was determined that the kitten was probably stuffed into the mailbox through the small opening.

The postal worker decided that this special delivery must have been fate, so he adopted the kitten and named her, P.D., short for Postage Due. No word yet if the kitten's postage was ever paid, or if any letters or parcels were "damaged" by the temporary-resident post box pussycat.