Washington ? Back in the days when there were good guys and bad guys and it was easy to tell the difference, some of the most beloved heroes were movie cowboys.

On Saturday, four of them get their just dues, being honored on U.S. postage stamps.

The stamps, pictured above, honoring Roy Rogers, William S. Hart, Gene Autry and Tom Mix, will be released at ceremonies at the National Cowboy & Western Heritage Museum in Oklahoma City.

The four will be recalled with 44-cent stamps and 28-cent postal cards.