Supergirl/Kara Zor-El made significant appearances in numerous Superman comics following her post-crisis re-introduction. The following collections were published prior to and concurrently with Supergirl Series 5.
Superman/Batman Vol. 1 (2014)
Collects Superman/Batman #1-13, originally published 2003-2004. This new edition reprints the issues originally collected in Superman/Batman Vol. 1: Public Enemies and Superman/Batman Vol. 2: Supergirl.
Supergirl first appeared in the Post-Crisis DC Universe in “The Supergirl From Krypton” storyline in Superman/Batman #8-13. The individual issues are available on Comixology.
Batman has discovered something strange on the bottom of Gotham Bay, which leads him to a mysterious and powerful teenaged girl bent on destroying Gotham City. What’s her connection to Superman? Why does Wonder Woman want to hide her from the outside world? Will Darkseid succeed in recruiting her into doing his bidding?
Superman/Supergirl: Maelstrom (2009)
Out of print. Not available digitally.
This limited series is set during the first year of the 2005 Supergirl series but was delayed in publishing until 2009. Written by Jimmy Palmiotti and Justin Gray. Art and cover by Phil Noto.
A vicious Apokoliptian villain known as Malestrom has arrived on Earth to kill Superman so that she might become The Bride of Darkseid! Superman and Supergirl join forces to battle the villain, but at what cost to Metropolis? From Earth to Apokolips and beyond, Superman and Supergirl face unexpected challenges in this action-packed tale examining what it means to be a hero.
World’s Finest (2010)
Available on Amazon
Members of the Superman and Batman families collide in this tale exploring the relationships of the heroes who make up the most popular dynasties in comics.
Each issue features a different team in a linked story about a sinister plot masterminded by the Toyman: #1 stars the Kryptonian Nightwing and Red Robin, #2 stars Robin and the Guardian, #3 stars Supergirl and Batgirl, and #4 stars Superman and Batman and features Supergirl and Batgirl. Oracle and Catwoman also star.
Written by Sterling Gates, Geoff Johns and Gerry Conway. Art by Jamal Igle, Phil Noto, Julian Lopez, Fernando Dagnino and others.
Superman: Brainiac (2009)
Available digitally on Kindle and other e-bookstores
Collects Action Comics #866-870. Supergirl appears in #867-870.
This storyline was adapted as the animated feature Superman: Unbound.
Before he came to Earth, the people of Superman’s home planet Krypton had battled Brainiac, a cold and callous alien obsessed with the control of knowledge. Now Brainiac has set his sights on destroying Earth and finishing off the Last Son of Krypton once and for all. The Brainiac storyline revitalized one of Superman’s greatest foes and brought the bottle city of Kandor to Earth, setting the stage for the storyline New Krypton.
Superman: New Krypton Vol. 1 (2009)
Collects Superman: New Krypton Special #1, Superman’s Pal Jimmy Olsen Special #1, Superman #681, Action Comics #871 and Adventures Comics Special Featuring the Guardian #1. Supergirl appears in New Krypton Special, Superman #681, Action Comics #871.
After a devastating battle with the alien villain Brainiac, the Man of Steel learns that a piece of his home planet Krypton survived — the shrunken, bottle city of Kandor. And when the city is grown to normal size, it looks like Superman finally has the connection to his past he’s been missing all his life as thousands of Kryptonians are suddenly able to walk the Earth. But his happiness soon turns to dread as relations between the Kryptonians and humans dissolve, and the two cultures face a massive clash.
Superman: New Krypton Vol. 2 (2009)
Collects Superman #682-683, Action Comics #872-873, Supergirl #35-36. Supergirl appears in all issues.
After a long-lost section of Krypton is miraculously resurrected on Earth, the Man of Steel greets thousands of Kryptonians who are suddenly able to walk among humans. But a jarring culture clash destroys relations between the two species and violence erupts. Soon, the government’s own anti-Kryptonian team sets out to dispatch the erupting conflict and the entire Superman family is affected.
Superman: New Krypton Vol. 3 (2011)
Collects Superman: World of New Krypton #1-5 and Action Comics Annual #1. Supergirl appears in WoNK #1, 2, 3, 5 and in a one-page profile in the annual.
Following the “New Krypton” event, the Man of Steel has had to embrace his past to ensure humanity’s future. And while a devastating armed conflict with Earth may have been averted, keeping the peace will be Superman’s greatest challenge yet. Now the Man of Tomorrow has decided to live with his newfound people on a brand-new world. But can he keep peace between Earth and this New Krypton? Not if General Zod has anything to say about it.
Superman: New Krypton Vol. 4 (2011)
Collects Superman: World of New Krypton #6-12. Supergirl appears in #6 and #8.
The Man of Steel has moved to a new planet populated by Kryptonians. Leaving Earth behind for a life in the Kryptonian military, Superman must make many sacrifices to appease his people while averting a conflict with the other planets. But an attempt on the life of a high-ranking Kryptonian sends Superman to Earth on a mission that may ignite the very conflict he’s been avoiding.
Superman: Last Stand of New Krypton Vol. 1 (2011)
Published in hardcover and softcover (both out of print)
Available digitally in single issue form on Comixology
Collects Superman: Last Stand Of New Krypton #1-2, Adventure Comics #8-9, Superman #698 and Supergirl #51. Supergirl appears in Last Stand #1 and #2, AC #9, SG #51.
After struggling to keep their society alive, New Krypton faces the threat of Brainiac, the alien believed to be responsible for the annihilation of the original planet Krypton! But Kryptonian General Zod has been waiting for this moment since Brainiac first attacked old Krypton – he has a plan to save his people.
Superman: Last Stand of New Krypton Vol. 2 (2011)
Collects Superman: The Last Stand Of New Krypton #3, Adventure Comics #10-11, Supergirl #52, Superman #699. Supergirl appears in Last Stand #3, AC #10, and SG #52.
The super citizens of New Krypton face an attack from a newly freed Brainiac, and it’ll take all their might – along with Supergirl and the Legion of Super-Heroes – to survive the onslaught.
Superman: War of the Supermen (2011)
The final chapter in the New Krypton storyline. Collects Superman: War of the Supermen #0-4 and one page from Superman #700. Supergirl appears in WAR #1-4.
Superman: Return of Doomsday (2011)
Collects Steel #1, Outsiders #37, Justice League of America #55, Superman/Batman Annual #5, Superboy #6.
This volume collects the first half of the Reign of the Doomsdays crossover (originally published spring-summer 2011). In the final Superman storyline before Flashpoint, Doomsday returns to track down and capture the four “replacement Supermen” from The Death of Superman. Supergirl only appears as Dark Supergirl in Justice League of America #55, which is also collected in Justice League of America Vol. 10 (see Supergirl’s appearances in this series).
Superman: Reign of Doomsday (2012)
This volume collects the second half of Reign of the Doomsdays, consisting of Action Comics #900-904. Supergirl appears in all issues.
The Brave and The Bold Vol. 1: The Lords of Luck (out of print)
Hardcover published Dec 2007. Paperback published Dec 2008. Individual issues are available on Comixology.
Collects The Brave and The Bold #1-6, originally published 2007 (concurrent with Supergirl #15-20). Supergirl teams up with Green Lantern in #2 and Lobo in #4, and appears in #3, #5, and #6.
Batman and Green Lantern set out on the trail of what could be the greatest weapon in the DCU: the Book of Destiny, whose possessor will have the knowledge of all that has ever been or will be. Along the way, an impressive array of DC heroes becomes involved, including Supergirl, Blue Beetle, Lobo and more as the battle lines are drawn.
Written by Mark Waid; Art by George Perez and Bob Wiacek; Cover by George Perez.
The Brave and The Bold Vol. 4: Without Sin (out of print)
Collects The Brave and The Bold #17-22. Paperback published July 2009. Individual issues are available on Comixology.
Supergirl appears in a team-up story with Raven in issues #17 and 18, in a story titled “Fathers” written by Marv Wolfman and illustrated by Phil Winslade. This is a strangely out-of-continuity story that seems to fit somewhere around Supergirl #13, published about 2 years prior, when the character was going through the highly unpopular “Evil Zor-El/brainwashed-killer-Kara” storyline by Joe Kelly that was promptly retconned away when editor Eddie Berganza was replaced after Supergirl #19. These issues serve at best as a curiosity, and at worst as an unwelcome reminder of one of DC Comics’ most damaging treatments of Supergirl. See Supergirl Comic Box Commentary for an excellent review.