I have the first print (F115-R) and the details are similar to the second print you've listed, although I'll have to check more carefully later.
With regard to the monsters, I also noted that a paragraph in the Giants section was deleted between the 1st and later (3rd+) printings.
Also interesting is that although the entry for Nixie was deleted from the Monsters, there is a reference to Nixies that remains under the Charm Person spell, I believe.
Another interesting sentence in the 1st print was a reference to Zombies being poisoned by salt - I think that this was under the section regarding spells.
The 1st print also has references to the Geomorphs rather than
B1.