At the risk of stepping into the "pile-o-poo" that this thread threatens to devolve into, for those interested in at least a couple of contemporary perspectives on the relative merits of various vintage brake pads and who have not otherwise already found same, I submit for your consideration the following articles:
For whatever it may be worth, I should have a few more interesting "announcements" to post upcoming next week including the availability of dozens more similar technical articles and road tests culled from the likes of Bicycling and Bike World.
Robert "stop the madness" Broderick ...the "Frozen Flatlands" of South Dakota Sioux Falls, USA