I just read on Patrick O'Grady's Mad Dog Media blog that Bicycle Retailer tweeted that Harris Cyclery has closed.
It is not clear what will happen to Sheldon's website.
https://maddogmedia.com/2021/06/13/r...lery/#comments

info regarding this over at the Paceline forum: https://forums.thepaceline.net/showp...5&postcount=17

Sheldon's widow, Harriet Fell, spoke on The Outspoken Cyclist podcast 6/26/2021. She (and John Allen) say the site will continue, independent from Harris Cyclery.

So sorry to see the end of this great community resource. I relied on the folks at Harris for years not just as a place to buy bicycles and gear and parts, or to have my bike serviced, but as a center of bike knowledge. Now who will help me keep my frankenstein 80's Bianchi frame going?

I am picking up the pieces and trying to do it myself, of course, but looking for advice here...

Sheldon and Sutherland... WOW

I find it strange that ball bearings are not mentioned at all unless mistaken, for the 3-4 speed.
I had to find it out via google and old manuals