The Accountant's Postcard Shopper is a highly targeted response pack which reaches the decision-makers, owners and managing partners of 80,000 plus small to medium-size CPA firms that have purchased or inquired about Mostad & Christensen's marketing products for accountants. Mostad & Christensen, Inc. sells marketing products for CPAs - client newsletters, brochures, Internet products, and more and has been marketing to CPAs since 1978.