Bob Roberts did t least two CDs (formerly cassettes) for Folktrax. Available (only, as far as I knoe) from CAMSCO Music. FTX-047 - STORMY WEATHER, BOYS - Bob Roberts - Barge Songs & Stories FX-208 - MAGGIE MAGGIE MAY - Bob Roberts - Sea Songs & Shanties

Priced at $18 (US) +S&H