Rod, tried my internal Agilent sources and haven't been able to find these manuals. Few years ago managed a project to add 100's of new manuals but the 546A and 10525T were not on the list. I started at the Colorado Springs Division (scopes and logic analyzers) 23 years ago -- these products are even before my time.
I'll keep looking, but hoping an 'old timer' from the Colorado Springs Division might have a copy underneath their desk.
Thanks for your reply and help. I was also hoping someone somewhere will have these manuals. I did find a pdf copy of the HP High Frequency probe 11096B that you don't have on your website. I can email a copy to you if required.