You will be able to continue donating money toward breast cancer research at your nearest post office. Sale of the Breast Cancer Research stamps was supposed to have ended last Friday but the program has been extended two years by an act of Congress. Richard Watkins, a postal service spokesman for Iowa, says some 215-million of the stamps have been sold nationwide, putting more than 15-million dollars toward cancer research. He says more than 800-thousand dollars worth of the stamps has been sold in Iowa alone since January of 1999.The stamps cost 40-cents each and can be used for first-class mailings like a 33-cent stamp, with the extra seven cents going to research. Seventy percent of the money raised goes to the National Institutes of Health, the other 30-percent goes to the Department of Defense — both are leaders in breast cancer research.