Yes, he does. If you look close at his head you can see where the color of the hair piece (lighter brownish color) meets his real hair (darker blackish hair).
Yes
Yes he does wear a toupee, and his son Skip is bald.
No
yes
Michael Landon did not wear a toupee. He had a full head of his own natural hair.
Yes
Yes
Yes.
You betcha
Yes
yes
Yes
yes