I'm guessing the first one is Mount Massive in the foreground and Mount Elbert behind, partially in clouds. To the right of Elbert would be the mountains in the vicinity of Independence Pass. The second is a zoom of the same area, with Elbert on the left and the Casco-Frasco group on the right.
Agreed on the third photo. That's Massive, which is unmistakable from the east at any angle, Arkansas Valley just south of Leadville in the foreground.