The only Wickford Express CD I've found is Fair Winds: Traditional Sea Songs and Chanteys I got it on a budget Laserlight reissue. I really like it, and I'd love to have any other Wickford Express recordings that are available.
Cindy, Mudcat's Dick Greenhaus operates CAMSCO Music. Dick does a number of small-quantity reissues, and he does good work.
You might want to get in touch with him. You can use this link to send him a personal message.

-Joe-