Was Mike McMaster's work (Bridge, D7, Romulan BOP) ever licensed?
What about Geoffrey Mandel's early work (Independence, K-7)?
You know, it looks to me like McMaster just put his work out there by mail order and waited to see if anybody sued. And as far as I ever heard, he either flew under the studio's radar or they considered him smallfry, being self-published and all.
Paramount must have seen his classified ads in STARLOG. I don't know if they ever contacted him. And of course he died very young. I love his drawings, especially the bridge.
McMaster's D7 blueprints were sold by Roddenberry's Lincoln Enterprises.