Found these on Soundcloud (Couldn't find Vol. 2), from what I gather these seem to be repackaged Bosworth albums with them being;
Vol. 1, The 1920's = [BPM 217] Music of the 1920s
Vol. 3, The 1940's = [BPM 219] Music of the 1940s
Vol. 4, The 1950's = [BPM 220] Music of the 1950s
Vol. 5, The 1960's = [BPM 221] Music of the 1960s
Vol. 6, The 1970's = [BPM 222] Music of the 1970s
Link: mega.nz/folder/OV0RFaKB
Key: pBTaY88jrTVK_ZKZqHB6xg
