Looks like what you got there is umpire John A. Quinn, followed by Gehrig, Gehringer and if I am not mistaken based on the first two letters on the right hand portion sweet spot looks like Connie Mack & Earl Whitehill
In the 2nd image , after Gehrig & Averill is Rabbit Warstler & Clint Brown....Cheers !
_______________________
jim@stinsonsports.com
Vintage autographs for Sale on my web site
stinsonsports.com