Pastor Bert Mitson

I'm trying to find a copy of the music written by this minister durng the 60's. Bert Mitson was a Pastor of the Assemblies of God church in Nelson, Lancs and he set up a Christian holiday camp in Bonsall Derbyshire during the 60's (which I know is still going but under new ownership). I remember having great times there as a child. Bert Mitson wrote a No of deeply spiritual hymns which he used at the Camp.  I remember the cover was a mid-green colour and I think the music book was called 'On Wings of Song'. Amongst these powerful hymns was 'Only For Thee Lord'.  We used to sing them during the worship services and I know my parents had at least one copy but I just can't find them. I don't think the hyms were published as such, he probably had a print run produced locally.  Anyone know anything or have a copy?   Anybody reading this, did you go to Bonsall for your summer hols?  I'd love to hear from you!