Prev Next Category: Envelope Dr. Al Ackerman Project, 0005 1977-11-21 Al Ackerman, USA Section: Correspondence A-Z Sent from: Portland, OR, USA Medium: Paper, Polaroid Category: Letter, Polaroid, Envelope Dimensions (cm): variable sizes Pages: 2 Subject: al ackerman, dr al ackerman project, photo series, instruction, lomholt formular press, transfer image, scientific electricity