There are only two printings in core, one with almost no detail which might be the first Printing and the sixth printing.
Should have …
2a - first printing
2b - first Canadian printing (or this should be it’s own entry as Harold Hedd (CAN)? Exact same cover as USA first print but indicia on inside back cover indicating it’s for Canadian distribution only)
2c - second printing
2d - third
2e - fourth
2f - fifth
2g - sixth
2h - seventh
2i - eighth
