National Mail Order Association- Direct Marketing Contacts
http://www.nmoa.org

All about finding and using Mailing Lists for Direct Mail
http://www.listsformarketing.com  

Expert Direct Mail and Mailing List Selection Help
http://www.nmoa.org/Membership/growbusiness.htm

Amity Direct- Mailing List and Direct Mail Experts
http://www.amitydirect.com

Direct Marketing Events, Seminars, Education & Trade Shows
http://www.directmarketingevents.com

Direct Marketing Research, Books, and Advertising Guides
http://www.nmoa.org/catalog

Building a Home or Small Business Book using direct marketing
http://www.nmoa.org/DirectMarketingToolkit

Information on Call Centers for taking orders by telephone
http://www.directmarketingcallcenters.com 

Information on Fulfillment Centers for the delivery of orders
http://www.mailorderfulfillment.com

Free Direct Marketing News by email...and more!
http://www.nmoa.org/freestuff.aspx 

Find New Products to sell
http://www.nmoa.org/Products

Sell your Product to Catalogs
http://www.catalogtimes.com

How to get Free Publicity
http://www.nmoa.org/catalog/publicity

Business and Marketing Books by Bob Bly
http://www.bobblymarketingbooks.com