Tim, here is a link to an article I posted about longtime collector Elwood Scharf's memories of collecting the 1933 Goudey set as a kid, including the timing of each of the 10 series of 24. The first seven series (167 cards, with the "Big League Chewing Gum" banner along the bottom) were distributed by early July, then the eighth series (#190-213) came out in mid-August, and the ninth series came out in September. The last series consisted of 12 cards each from the two 1933 pennant winners (Giants and Senators), with text on the back reflecting their World Series performance, and came out at the end of October. This last series did not include the last 24 numbers, as you might expect; as was often done in those days, Goudey did not number the cards in each series consecutively, so the Giants in the last series were #125-127 and 232-240, and the Senators were #107-114 and 121-124.
http://net54baseball.com/showthread.php?t=219310
Edited to add: I see that pro9 added the info about the card numbers while I was writing my reply.