This issue has variants.
Includes a 16 page insert
Color credits confirmed by Anthony Tollin.
Story continues in Batman (DC, 1940 series) #444.
Letters from: Mark Billian, Elvis Orten, Melissa Page, John L. Egnew, Alex Clarkson, Jim Broadhurst, Eric Wesselak, Kele Lampe and Glenn L. Greenberg. From the Den column.