Yes, had this bike since new in the mid 1980s. On it's 3rd rear cluster, new pedals, rebuilt hubs / bottom bracket / headset, new seat, 2nd chain.
Rims are original grey hard anodized and are worn through fairly thin on the braking surface. If they didn't have the tubular structure they would be cracked everywhere.

I'm also in Winnipeg and want to ride out the weather while I can. When the snow begins to fall I'm going to order some 36 spoke rims, rebuild the hubs again, and build up the wheels.
Thanks for everyone's thoughts.

Salamandrine, you probably saved me a whole lot of money and trouble.
I like both the Velo Orange and Pacenti offerings. I would have bought the Velo's today but the 36H are out of stock.