The Complete Peanuts 1967-1968: Vol. 9 Hardcover EditionSnoopy finds himself almost completely engrossed in his persona as the World War I Flying Ace to the point where he goes to camp with Charlie Brown and maintains his persona throughout the entire two week period (much to Peppermint Patty's bafflement). Still, Snoopy looms large, so this volume (a particularly Snoopy heavy one) sees him arm wrestling Lucy as the Masked Marvel and then taking off for Petaluma for the national arm wrestling championship;