After Hawkman Vol. 2 ended at the end of 1987, Hawkman and Hawkwoman showed up a couple of times in Justice League International (Feb '88) and the Invasion series (Jan '89) but they didn't have a major part. These appearances have been shoehorned a bit into the story of Fel Andar and Sharon Parker.

I thought those were the 2 series that had some appearances, but didn't know issues. Thanks. The notable post-HAWKMAN Vol. 2 appearance for me is POWER OF THE ATOM #4.