I am going to guess Rollfast, based on the front sprocket that Bikedued's picture shows. Murray used a different sprocket design. I had, as a young kid, a 24" Wards Hawthorne that was made by Rollfast that used the same sprocket.
The LBS where I got my Raleigh Grand Prix in the late 60's sold Rollfast bikes.
Here is a link to an expired Ebay listing:
http://cgi.ebay.com/ROLLFAST-BICYCLE...QQcmdZViewItem
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1971 Paramount P-13 Chrome
1973 Paramount P-15 Opaque Blue
1974 Raleigh Professional Blue Mink
1991 Waterford Paramount
Holland Titanium Dura Ace Group
Holland Titanium Ultegra Triple Group
Last edited by Rabid Koala; 03-03-07 at 10:22 AM.