Hi, Bill, we built a Hallmark while writing the SN article; ST 46 like Gene used, flew absolutely great!!! No doubt this was a world class machine. Gene was very gracious and helpful in authenticating the plans, and seemed truly humbled that anyone was still interested! Bob Hunt had kept in touch with him, and was a big help with the article. Eliott Scott drew the plans for SN. Just got a set of wings from Bob for another Hallmark...RIP, Gene, thanks for the memories...