Post-Crisis Appearances of Silver Age Supergirl

Christmas with the Super-Heroes #2 1989 (collected in DC Universe by John Byrne; scans of issue available here)
Legends of the DC Universe: Crisis on Infinite Earths #1 1999
A “missing tale” taking place between Crisis on Infinite Earths #3-5 featuring Silver Age Supergirl and Supergirl of Earth-D. (scans of issue available here)
Supergirl #75 December 2002
“The Supergirl From Krypton!”
Supergirl #76 January 2003
“Many Happy Returns Part Two”
Superman vs. Darkseid: Apokolips Now! March 2003
“Apokolips Now!”
Supergirl #77 February 2003
“Fatalist Attraction” (Many Happy Returns Part Three)
Supergirl #78 March 2003
“Bad Choices” (Many Happy Returns Part Four)
Supergirl #79 April 2003
“…And There Can Be Only One!”
Supergirl #80 May 2003
“Hail & Farewell” (Many Happy Returns Conclusion)
DC: The New Frontier #6 November 2004
“Epilogue: The New Frontier”
Solo #1 December 2004
“Young Love” – a touching Silver Age era story starring Supergirl and Dick Malverne. 8 pages.
Solo #7 December 2005
“Doom Patrol vs Teen Titans” – Supergirl appears on page 11 and page 12. 8 pages.
Justice #8 December 2006
“Justice (Chapter Eight)”
Justice #10 April 2007
“Justice (Chapter Ten)”
Justice #11 June 2007
“Justice (Chapter Eleven)”
Justice #12 August 2007
“Justice (Chapter Twelve)”
DC Universe Legacies #5 November 2010 [cameo]
“Crisis!”
DC Retroactive: Superman – The ’70s September 2011
“Death Means Never Having to Say You’re Sorry”
DC Retroactive: Superman – The ’80s October 2011
“New Day, Final Destiny”

Convergence (2015)

Convergence is an event that took place from April-May 2015 to cover a two-month period when DC Comics ceased publication of all its titles while moving their headquarters from New York, NY to Burbank, California. The event consisted of an eponymous #0 issue, an eight-issue core miniseries, and 40 two-issue tie-in miniseries. The premise is that Brainiac has extracted DC Universe inhabitants from various pre-2011 timelines and kept them in domed cities on a planet outside of time and space.

The original Pre-Crisis Supergirl stars in Convergence: Adventures of Superman #1 and #2 and makes a few on-panel appearances in the core title Convergence #5-8.

Issue Collection
Convergence: Justice League #1 (pre-Flashpoint Supergirl)
On sale Apr 8, 2015
Convergence: Flashpoint Book One
Convergence: Justice League #2 (pre-Flashpoint Supergirl)
On sale May 6, 2015
Convergence: Flashpoint Book One
Convergence: Supergirl: Matrix #1 (post-Crisis, pre-Zero Hour Supergirl)
On sale Apr 15, 2015
Convergence: Zero Hour Book Two
Convergence: Supergirl: Matrix #2 (post-Crisis, pre-Zero Hour Supergirl)
On sale May 13, 2015
Convergence: Zero Hour Book Two
Convergence: Adventures of Superman #1 (pre-Crisis Supergirl)
On sale Apr 22, 2015
Convergence: Crisis Book One
Convergence: Adventures of Superman #2 (pre-Crisis Supergirl)
On sale May 20, 2015
Convergence: Crisis Book One
Convergence #5 (one-panel appearance of pre-Crisis Supergirl)
On sale May 6, 2015
Convergence
Convergence #6 (post-Flashpoint Supergirl and pre-Crisis Supergirl)
On sale May 13, 2015
Convergence
Convergence #7 (versions of Supergirl from across the multiverse)
On sale May 20, 2015
Convergence
Convergence #8 (versions of Supergirl from across the multiverse)
On sale May 27, 2015
Convergence