cover does not appear to be Bob Kane, as credited elsewhere
Writer identification from Bob Hughes and confirmed by Martin O'Hearn at http://martinohearn.blogspot.com/.
A list by Lionel English also gives the penciller and inker as "Morris Waldinger" in one of the issues this PSA appears in. Other credits from a list by Lionel English.
writer credit by Bob Hughes
On the page immediately following page 6 of the previous story sequence.
On the page immediately preceding page 7 of the previous story sequence.