Where can I find Pulls For my Finn Juhl Diplomat Desk?  

Maybe try Hume modern in LA. ...
Maybe try Hume modern in LA. If they don't have them maybe they will have a lead on another place to try. Good luck, that is great hardware.

I'm confused. The first pic...
I'm confused. The first pic are pulls from the Arne Vodder 'diplomat' line and the 2nd pic are from the Juhl 'diplomat' line. Which are you looking for and what does the desk look like? Maybe you have the Vodder 'dipomat'?

try hafele
Hafele makes a very similar pull to the first image:
http://www.knobs4less.com/Hafele-Cabinet-Hardware-Centers-Drop/haf106346...