Couple things -- (1) you're responding to a post from over 10 years ago, and I'm sure those items have sold since then; (2) Miller Huggins autographs will be cheaper today than many of the other names on your list.
For example, the going rate for a Jimmy Collins autograph is over $30,000...
https://robertedwardauctions.com/arc...na-gem-mint-10
Huggins is much, much more plentiful, and can be had in the $3,000-$4,000 range.
Good luck with your search!