Appearances: 

Destroyer, Sif, Karnilla, Loki, Balder, Odin, Ulik

Significant Events:  none

Synopsis: Sif, inside the Destroyer, saves Thor.  But the mystic programming takes over, and she can do nothing to stop the Destroyer from attacking him.  At the same time, Odin decides his penance is done, and returns Thor's power to him.  Meanwhile, in Asgard, Ulik attacks Karnilla and the rest.  And possessing enchantments greater than Karnilla's there may be no stopping him.

Thor #152           May 1968
"The Dilemma of Dr. Blake!"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters:  Sam Rosen

Appearances:  Destroyer, Odin, Balder, Sif, Ulik, Karnilla, Loki

Significant Events:  none

Synopsis: In order to defeat Ulik, Karnilla returns Sif's spirit from the Destroyer, which leaves Thor free to follow back to Asgard.  He battles and defeats Ulik, but he discovers that Mjolnir is missing.

Thor #153                June 1968
"But Dr Blake Can Die"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters: Artie Simek

Appearances: 

Karnilla, Balder, Sif, Loki, Don Blake, Ulik, Odin

Significant Events:  none

Synopsis: Loki, having stolen part of Karnilla's power, now has enough to lift Mjolnir.  Loki then goes to Earth, where Thor and Sif follow.  Sixty seconds have passed, so he changes to Blake.  Loki attacks them both and critically injures Sif.  Blake manages to wrest his cane from Loki and changes to Thor again.  Thor ties up Loki, then rushes with Sif to a hospital, where he must perform surgery.  He saves her life, then changes to Thor again to battle Loki, who has freed himself.  Odin decides enough is enough, and orders them to stop fighting.

Thor #154          July 1968
"...To Wake the Mangog!"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters:  Artie Simek

Appearances: 

Loki, Hela, Sif, Harokin, Ulik, Mangog, Toag, Odin, Karnilla, Balder

Significant Events:  none

Synopsis: While Thor is on Earth watching over the recovering Sif, Ulik finds a hidden cave, and releases Mangog.  And with Thor on Earth and Odin sleeping the Odinsleep, Loki is in control of Asgard.  While Thor is waiting, he stops a mugging and comes down on some hippies - harsh!

Thor #155                August 1968
"Now Ends the Universe"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters: Artie Simek

Appearances: 

Sif, Balder, Karnilla, Recorder, Ego, Fandral, Hogun, Volstagg, Loki, Mangog

Significant Events:  none

Synopsis: Thor and Sif return to Asgard, just in time to join the fight against Mangog.  Thor rides out to fight him, while Sif stays to watch over Odin.  Thor comes across the Warriors Three imprisoned in some rocks, but before he can free them, Mangog strikes.

Thor #156          September 1968
"The Hammer and the Holocaust!"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters:  Sam Rosen

Appearances: 

Mangog, Fandral, Volstagg, Hogun, Loki, Heimdall, Recorder, Balder, Karnilla, Sif, Odin

Significant Events:  none

Synopsis: Thor continues his battle with Mangog, while the Recorder arrives from Rigel to record the events.  Mangog fights his way toward Asgard to pull the Odinsword from its scabbard, where its protected only by Sif.

Thor #157          October 1968
"Behind Him...Ragnarok!"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters:   Sam Rosen

Appearances: 

Mangog, Volstagg, Hogun, Fandral, Balder, Karnilla, Loki, Recorder, Sif, Odin

Significant Events:  none

Synopsis: Thor continues to fight against Mangog without any success.  As Mangog is about to draw the Odinsword, Odin has awoken.  He uses the Odinpower to return Mangog's race back to life, ending Mangog in the process.

Thor #158                November 1968
"The Way It Was!"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters: Sam Rosen

Appearances: 

reprises Journey into Mystery #83

Significant Events:  none

Synopsis: Don Blake has return to Earth and recalls how he found the enchanted walking stick.  He then begins to question himself and who he really is.

Thor #159                December 1968
"The Answer at Last"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters: Sam Rosen

Appearances: 

Don Blake, Heimdall, Odin, Fandral, Hogun, Volstagg

Significant Events:  origin of Don Blake

Synopsis: Odin tells Don Blake his true origin.  Of how Thor lacked humility, and to teach it to him, he recast him on Earth as Don Blake.

Thor #160                January 1969
"And Now...Galactus"

Writer:  Stan Lee
Artist:  Jack Kirby
Inker:  Vince Colletta
Letters: Sam Rosen

Appearances: 

Tana Nile, Recorder, Odin, Sif, Galactus, Ego

Significant Events:  none

Synopsis: Thor and the Recorder go in search of Galactus.  Meanwhile, Galactus faces off against Ego.