Thank you - I take that as high praise from a researcher as thorough as yourself.

The book filled a need - no one had yet combined the many different SA-produced early cartridge models into one compact reference source.

The second one will be a bit more esoteric, and, a somewhat greater percentage of the subject (the rare .45-70 TDs and their cousins) has been covered elsewhere, but I'll have a price-point advantage.

North Cape has suggested marketing a three-part set, with my two wrapping (so to speak) his basic .45-70 work, which really started the ball rolling a number of years ago. I think that has some appeal.