All the Blues Collection issues (and the Jazz Greats from Marshal Cavendish) need to be made International, as they were widely available in Australia, and no doubt elsewhere too. Issue dates were probably a couple of months after the UK, as is normal for the bulk of UK magazines sold through Australian newsagents.
From camshaft's original Record Notes (now deleted) Composer detail I'm not sure if one name or two on track 15.
Hopefully, the label name is correct or should it be Orbis?
The composer of track 15, Lafayette Leake, is actually one person, see Wikipedia:
"Lafayette Leake (June 1, 1919 – August 14, 1990) was a blues and jazz pianist, organist, vocalist and composer who played for Chess Records as a session musician, and as a member of the Big Three Trio, during the formative years of Chicago blues. He played piano on many of Chuck Berry's recordings."
Also The Blues Collection seems to be the right label here, see Discogs:
"This 'umbrella' logo was often employed on issues which accompanied 'Orbis' magazine. ... Orbis were the publication house of the De Agostini Company. Effectively, the label for these releases was 'The Blues Collection', produced/compiled by Orbis."