This issue has variants.
On-sale date from copyright registration.
Color credits confirmed by Anthony Tollin.
Story continues in Detective Comics #518.
Snyder credit per Gary Usher's Robin Snyder Comic Book List. Letters of comment from Ross Raihala, Aaron Mathison, Kari Skouson, Michael Pickens, Dave Schmidt, Scott Gibson, Tony Sprague, William Day, Napoleon Bonaparte and Kenneth Martin.