Hmm, it's taken us 15 years, to blog 3 consecutive issues of Thor.

Starting with #236 in 2007, then #237 three years later. Moreover, we brought up Kamo Tharn (or Tharnn) a bit ago, and I'm sure you've been clamoring to see his first appearance...I don't care, we're doing this anyway. From 1975, Thor #235, "Who Lurks Beyond the Labyrinth!" Written by Gerry Conway, pencils by John Buscema, inks by Joe Sinnott. 

Y'know, when Thor gets stuck in the rain, he's only got himself to blame, right? Actually, he's moping, since Jane Foster was fading fast. Losing his temper, he knocks a chunk off the side of the roof, then has to finesse his hammer to save people from the falling debris. He's not the only one in a sour mood, though, as the returning Absorbing Man was trying--and largely failing--to keep a low profile, so he could put his master plan against Thor into action. (OK, it's a plan, you have to give him that much.)

Thor meets with Odin's Vizier--I feel like he should have a name other than 'Vizier,' but not sure he's ever given one--to discuss Jane's plight: she's seemingly lost a chunk of her soul, the will to live, something. The only hope is hopeless, as the Vizier has sent Hercules and Sif across the universe, in search of the Runestaff of Kamo Tharnn. After fighting through his ape-like guards, they find...what appears to be a blind hobo squatting in a library. There's something more to him, though; as he uses the Runestaff to deafen Herc! But, the staff's blasts aren't enough to keep him down, and he and Sif return to earth with the staff; only to find Thor was fighting the Absorbing Man, who had gotten close enough to touch Mjolnir and imitate its power. Hercules wants to join the fray, but Sif worries Kamo Tharnn could track them down, and they need to use the staff and save Jane now...

While Tharnn's story seems pretty wrapped up in #335, he has turned up since, since he somehow gets Elder of the Universe status. Somehow. I want to say he's in Englehart's Silver Surfer, but had to check: he wasn't one of the Elders bodied by Thanos in Thanos Quest. Also this issue: a John Severin Sgt. Fury Marvel Value Stamp and a Statement of Ownership, Management, and Circulation: Paid circulation, actual number of copies of single issue published nearest to filing date, 230,311.