Hiya Red...I've always heard this issue is a misprint of 45-301. The fact that almost all AFO cat. numbers are 300 series and there are no other issues showing a 100 series leads me to think that info is correct.
Prince La La was the stage name of Lawrence Nelson (1936-1963), who died under mysterious circumstances at 27 after two releases on A.F.O. Two other tracks, "Things Have Changed" and "Need You," surfaced some 30 years later on Ace's Gumbo Stew A.F.O. compilations. "Need You," written by Jessie Hill, is particularly notable as a forerunner of the "voodoo rock" sound made famous by Dr. John.
See Dan Phillips' post for more. Nelson's death also inspired Oliver Morgan's "Who Shot the Lala" (GNP-318X).