Unfortunately he's no longer taking orders for hard copies of Electronotes. But a bunch of the articles are posted on the Electronotes site.
I have a copy sent to me by Bernie (or maybe a helper) several years ago that I am thinking of selling. The printouts came in a large paper box from paper reems. Point was even though some are available as PDF, the cost of printing them yourself, as I calculated too, exceeded what they wanted to send them. Contact me offline if someone wants to purchase them. Same cost as I paid.
There are many tricks and techniques in the docs that have broad applicablity to audio. Many related to keeping eveything in tune by preventing oscillator drift.
Jerry
p.s.: I was working on a general purpose module using the analog devices VisualDSP (might not be the name, but it is the block programming DSP software from AD). I was planning to make a module that, with a PC loader, could emulate oscillators, ADSR, filters, amps, etc depending on the load from the PC module. The modules had mutiple knobs and in/out connection that could be changed with the loader. This was all digital, and that violated my analog principles so that was the first hangup... I got pretty far until I needed to implement control voltages for the keyboard. Then Roland released the boutique series of synths and I bought a few, then a deepmind 12, and now a Fantom88. The issue with the Eurorack synths is that I found you quickly had a want/need for poly and that multiplies everything, of course. And now the Fantom has n/zyme, that I found to just be incredible and can point to new movies, commercials etc that have that style of music..