Superman Vol. 1 (1939-1986; 2006-2011) / Adventures of Superman Vol. 1 (1986-2006) #440

Plot

Batman gives Superman the results of the mysterious scrapbook, noting that he now knows Superman is Clark Kent, with Superman responding that he knows Batman is Bruce Wayne. Superman gives the scrapbook to Ma Kent for safekeeping, only to find out it was hers all along, and that it's been missing for awhile.