I have a copy each of the UK and Japanese "Sons of Pioneers" photo books - Japanese version has substancially more photos, colour plates and comes with dustjacket and bookmark. Both mint condition.
Also "Sons of Pioneers" and "In Praise of Shamans" UK tour programmes as well as Japan Fan Club UK Fanzine (No.1 May 1978, 8 pages with b/w photos and typewritten Chris Carr interview with the band).
Reasonable offers invited!! By all means haggle...