Mark is offering an awesome deal on his books - The Rasner Effect & Without Hesitation: The Rasner Effect II. You can purchase a signed copy of either title for only $16 or both books for $30. These prices include shipping and handling. He accepts Paypal payments at the email address: MRosendorf@nyc.rr.com.
Make sure that you include your mailing address and who you want the book to be autographed to.