Remember the Mitchel Cotter Company? Did schematics ever get released?

Have the Verion (early cotter) transformer info.
The cotter uses has a different strapping on the (P)
 

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There may have been a power amp as well... I have a vague recollection of his use of current mode amplification? His gear was also made during the period when some hi end companies were potting their pcb's into epoxy blocks, protecting their designs, but rendering servicing impossible. Not sure if that's the case here, but it would explain why no one reverse engineered and published the schematics....