Pencil/Ink credits from a discussion on the Charlton Arrow facebook page.
Two page questionnaire targeted at young readers with questions like "Do you send for items advertised in comics?" and "How much spending money do you have each week (either from parents or earn through a part-time job)?"
"Mail your questionnaire to:
c/o Mark Clements Research, Inc.
516 Fifth Avenue
New York, N.Y. 10036"