The cards in this 598-card set measure 2 1/2" by 3 1/2". There are the same number of cards as in the 1965 set. Once again, the seventh series cards (523 to 598) are considered more difficult to obtain than the cards of any other series in the set. Within this last series there are 43 cards that were printed in lesser quantities than the other cards in that series; these shorter-printed cards are marked by SP in the checklist below. Among other ways, cards were issued in five-card nickel wax packs, 12-card dime cello packs which came 36 packs to a box and 12 boxes to a case. These cards were also issued in 36-card rack packs which cost 29 cents. These rack packs were issued 48 to a case. The only featured subset within this set is League Leaders (215-226). Noteworthy Rookie Cards in the set include Jim Palmer (126), Ferguson Jenkins (254), and Don Sutton (288). Jim Palmer is described in the bio (on his card back) as a left-hander.