Steve,
The July 1966 catalogue, 97 pages, has a green and white cover featuring two sportsmen with gun and rods, on a river bank, one of whom is shooting at ducks.
The 1977-78 Catalogue, 119 pages has a blue, white and gold cover featuring the patent symbol, a picture of their best gun and their address.First reading pages is entitled,"175 ANNIVERSARY."
In addition I have their pictorial catalogues for 1988, 2000,2002[Bicentenary catalogue],2003 and as well; two catalogue supplements for 1984-1985
Over the years[I am 85] I have since the 1950's had a very good relationship with Powell's prior to their relocation to Banbury. I was always well received by the Powell staff in particular, by Peter Powell.
Best regards,
Roy


Roy Hebbes