here are a few we have documented that Murray made biciycles for!
http://murrayeliminatormusclebikes.yuku ... er-Project
X1 = Atkins
X3 = Vanguard??? Murray badged
X6 = Flying O (Otasco-Oklahoma Tire and Supply Company)
X7 = BF Goodrich
X8 = Firestone
X10 = Westernflyer (Western Auto)
X12 = All Pro (Kmart)
X13 = Murray
X18 = Hiawatha (Gambles)
X23 = Murray
X25 = Foremost (JC Penneys)
X26= Guaranty's
X28 = Fleetwing Tigercat
X30 = Gambles
X31 = Gambles
X32 = Parkleigh
X34 = Liberty (Chicago Cycle Supply Company)
X35 = Liberty (Chicago Cycle Supply Company)
X36 = Liberty (Chicago Cycle Supply Company)
X40 = Murray
X43 = Murray
X55 = Murray (Gordon Bicycle Supply Co.)
X56 = Ben Hur
X63 = Hallmark
X65 = Murray - Special for 1965 (in 65 only, could have been used other years as a different meaning)
X67 = Sportscrest
X69 = Special for 1969 (in 69 only, could have been used other years as a different meaning)
X70 = Special for 1970 (in 70 only, could have been used other years as a different meaning)
X71 = Sportscrest (?) Also Special for 1971 (in 71 only,could have been used other years as different meaning)
X73 = Walco badge and Dayton badge ( Walthour & Hood Co. in Atlanta)
X81 = Murray
X82 = Murray
X83 = Might actually be a Sears number??????
X84 = Murray
X92 = Federal
X95 = AMC
X97 = Murray
X98 = Swarthmore