Supergirl is grabbed by monster tentacles. She wakes up...somewhere, probably Hell.

Supergirl is knocked out by a ultrasonic screech.

Supergirl is wrapped up in tentacles on the cover. Inside, she's knocked out in battle.

Supergirl is fired upon with really powerful guns. She doesn't die though.

Supergirl is defeated in a violent way.

Bizarro Supergirl defeats regular Supergirl. In the next issue (#63), Batgirl comes to the rescue and revives Supergirl.

Supergirl is blasted unconscious. She wakes up chained to a pillar. This is also the final issue in the Many Happy Returns saga.

Nice unconscious cover. On the inside, Supergirl pretends to get knocked out. Later, a female villain manages to gas herself and Supergirl.

Continuing from issue #69, Mary Marvel is still unconscious. She recovers soon.

Unconscious cover.

Supergirl saves her counterpart. From the Many Happy Returns saga (part 2).

Just some inside scans that I thought were interesting.

With the flick of her wrist, Supergirl defeats Ivy and Harley. There is a really nice panel showing Harley Quinn unconscious and bound with her own mallet. This scene is a reprint of Superman/Batman #19

Lex Luthor beats Supergirl unconscious, and exposes her to Black Kryptonite, which splits an evil version of Supergirl off. Contains brief unconscious scene in issue #4.

Supergirl stands over an unconscious Powergirl on the cover.

Caitlin Fairchild is violently knocked out during one of Superman's fight sequences. She wakes up believing she is Supergirl.

Supergirl is taken out with Kryptonite, but this scene is misleading. The girl in the first page is Kim, Supergirl's friend. She is pretending to be unconscious.

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Supergirl is knocked out and thrown into a PIT OF DOOM!!!! Has a nice unconscious cover image.