Send a stamped self-addressed #10 envelope to ODT,
and we’ll be happy to send you samples of our map
postcards, including the Population Map, Peters Map, Mecca-centered Azimuthal projection,
and Waterman Butterfly Map.
Mail to: ODT, PO Box 134, Amherst MA 01004
International customers, please be sure to apply
sufficient postage for 1 oz. First class mail
are placing an order with us, you do not need to send us
an envelope. Simply request the sample postcards in
the Special Instructions section of your order form.
We'll make sure they're included with your order.
to purchase any of these postcards.