Dick Mann poses with his muddy Greeves after taking second overall to winner Don Shacker in the AMA District 36 Rough Scrambles Championship held in Placerville, Calif., in November of 1963.

Most racing fans know that Dick Mann was the first racer to complete the AMA Grand National Grand Slam (victories in all forms of flat track – TT, short track, Mile and Half-Mile – and a national road race victory), but just to add to “Bugsy’s” versatility, he was one of the leading early motocross riders in America.

Here Mann poses with his muddy Greeves after taking second overall to winner Don Shacker in the AMA District 36 Rough Scrambles Championship held in Placerville, Calif., in November of 1963.

It must have been a brutal course. A total of 138 riders started the 80-mile race and only 20 riders finished.

Greeves also must have been the motocross bike to have in 1963. The top-five finishers were all on the British-made machines. The bikes were known for their unusual leading link swinging-arm front fork design.