I first started commuting on this:
1972 Triumph Roadster. Surmey Archer 3 speed.
Then, I came across this Miyata, and transferred the rack & saddle to it:
1990 Miyata 721A
But then I gave the bike to my son (but kept the rack and sold the saddle).
Then my son found this, so I fixed it up, put the rack on it and now I commute on this bad boy:
1990 Trek 790 Multi Track