Very nice shots! That is one nice thing about Nikon not changing t heir mounts. It was a double-edged sword, though! My first SLR was a Nikon FM-10 :-)
Great job with the manual focus. If you have the visual acuity, it can actually be faster than AF in many situations. Some of that old glass was really good, too, despite the chromatic aberrations and flaring that some of them suffered from. Very nice work!