Add and Pass. This form was created in the 1950s by artist Ray Johnson, and over time became something of a creative chain letter. Ray would create a drawing or collage of some sort, send it to a person which instructions to modify it in some way and pass it along to a specified third party, which he used as a vehicle for introducing people to each other. These days, "Add and Pass" pieces are open ended, encouraging the recipient to add to, photocopy and pass on, and also to send a copy to the others who have modified the sheet so they could see how it has changed. The results are wildly different as each generation passes from person to person, often with people cutting the entire piece up and making whole new sheets from it.
