I have ROUNDER 1054 (cassette) listing 20 titles (possibly as the CD?)
The following 4 DECCA may just be those "bonus" tracks referred to?

*Small Island* - Invader -          DECCA M30732 - US Issue No. 34002
*Carenage Water* - Invader -       DECCA M30732 - US Issue No. 34005
*Dock Site Baby* - Invader -       DECCA M30731 - US Issue No. 34002
*The Soldiers Came & Broke Up My Life* - Invader

DECCA UK M30700 Series
All 4 Recorded with Lionel Belasco and his Orchestra in NY 21/5/45.

as listed West Indian Gramophone Records in Britain: 1927-1950
John Cowley
Centre for Research in Ethnic Relations
University of Warwick, Coventry CV4 7AL   (February 1985)

GJ