Good morning, Bob;
The place that John and I use (it turns out that we live in the same region) is called Camera Clinic, 518 NE 165th Street, Shoreline, Washington, 98155, telephone 206-367-2440. The main fellow there is Doug Daily who used to work on cameras in the San Francisco Bay area diagonally across the road from EPOI, Ehrenreich Photo Optical Industries, the importer of Nikon back when the Nikon SP, F, F2, and others were in vogue. I could ask Doug about International Camera when he gets back next week.
Yes, older lenses with lanthanum, thorium, and a few similar elements in their glass formulations do seem to respond to just being left on a south facing window sill for a few days or a week or two. The Ultra Violet radiation does seem to make the yellow color cast go away. It may not be that much of a problem if you shoot mainly black and white. And, this quirk does not affect just Nikkor lenses only. My Minolta Rokkor and Asahi-Pentax Takumar lenses also seem to develop a yellow cast if left in the camera bag for months at a time and are not taken out and exposed to sunlight with UV radiation in it. My Minolta Auto Rokkor-PF 1.4/58mm lenses were the first where I noticed this characteristic.
The 1960's Nikon Project. Yes, it is a collection of pieces that will represent what a professional or advanced amateur might have carried in his bag back in that era. As mentioned earlier, your selection of lenses is very similar to what is in that group. It is not what EPOI had available as the best of their offerings, but it is probably representative of what people actually did afford and carry as a working set of lenses. I still like them. And, yes, they are all prime single focal length lenses. Zoom lens technology was not highly developed at that time, and usually prime lenses were chosen for their superior optical performance.
The F's might be able to benefit from some attention, but the Nikkormats with the Copal Square shutter just seem to keep going. The one in my Nikomat FTN is just about accurate enough to use in checking the calibration of my camera test equipment. Cleaning and Lubrication do seem to help, along with a new light seal here or there, but the need for adjustment to the shutter in the Nikomat has not been required. All of them may need attention for the light meters, but that is another topic, including what path to take for getting around the loss of the PX-625 mercury formula photographic battery.
Enjoy;
Ralph, Latte Land, Washington