Here are some issues that are ALREADY DIGITIZED and available in digital trades. They merely need to be uploaded as individual issues.
Detective Comics #563 (Moench/Colan)
Available digitally in Batman Arkham: Two-Face
Detective Comics #579 (Barr/Breyfogle)
Available digitally in Batman: The Dark Knight Detective Vol. 1 & Legends of the Dark Knight: Norm Breyfogle Vol. 1
Batman Annual #11 (Moore/Freeman & Collins/Breyfogle)
Available digitally in DC Universe by Alan Moore, Batman: Second Chances, & Legends of the Dark Knight: Norm Breyfogle Vol. 1
Batman Annual #13 (Owsley/Bair & Dooley/Jones)
Available digitally in Batman: The Caped Crusader Vol. 2
Batman Annual #14 (Helfer/Sprouse)
Available digitally in Batman: The Caped Crusader Vol. 3 & Two-Face: A Celebration of 75 Years