Supergirl, Final Crisis, Showcase, Supergirl and the Legion of Super - Heroes, Action Comics

Here's a couple of Super Supergirl Showcase Appearances From 1995.

Supergirl and the Legion of Super-Heroes: Strange Visitor From Another Century Graphic Novel from 2006 compiles Legion of Super-Heroes 6, 9, 13-15, 16-19 from 2006.

Action Comics #674 from '92 features a Supergirl logo & reintro inside story.
Thank You Dave!