In the App Note 47 List of References, Jim cited three books in the "Tektronix Concepts" series. These books discuss circuit theory from basic introductory concepts to detailed, specific design examples (from Tektronix products, of course). They were authored by a variety of engineers at Tektronix. Reading through them, you wonder how many of Tektronix's competitors bought and devoured these books. Scans of some of the volumes in the series can be found online in PDF format.
A friend of mine has a nearly complete set.
I am green with envy. My bookshelf needs a set of these.