Schwinn Twinn with steel paperboy baskets rear, porteur rack and big steel basket front = 80 lb.
Loaded, one time I weighed it full of groceries and it was 165, so 85 lb of groceries.
Weighed with a bathroom scale (quality, German-made), one wheel at a time, other wheel spaced up to the same height to avoid cosine error. Probably accurate to within about 2 to 4 lb.

(Laurie is about 70 y.o. in that pic. A very good stoker, with medals at district championships, raced at nationals, she pulls her weight and then some.)
I can't remember if that weight was before or after I replaced the fork, F. brake, F. wheel and F. handlebar. The original parts were criminally negligent.
Unsafe at any speed. Look at that brake, imagine it on a chrome-plated steel rim in the rain. With practically no help from the rear, except a worn-out Atom drum brake.
Now with a proper tubular fork and canti brake on alloy rim, we finally have "some" braking.
Oh and that extra bolt head visible in the stem? That goes through, into the handlebar, because the bars slipped easily in the stem clamp, with all that leverage from the ape-hangers. Always fun to be trying to brake on a downhill only to have the bars rotate forward unexpectedly.