65 F100 removed all the hardware to include dropping the passenger side window but I can not recall whether the vent window is remove thru the bottom or the top. Over past 45 plus years not the 1st time I have removed both window and vent but this ole timers memory has failed me. I could not find the how to in any of the 3 volume shop catalogs, any comments/suggestions, or how to info in a section in any of the 3 volume shop manuals appreciated!!

 

Dave, there’s this short tutorial on YouTube:


There are others as well, enter “Vent Window removal, 61-66 Ford Truck.

 

I be thankin U, vent window removed with the aid of U'r response!!