The year 2014 marked the 50th anniversary of the first year of operation of the Germany & Colonies Philatelic Society following the amalgamation of the Germany & Colonies Stamp Club (established 1947) and the Stockton German Study Group (1960).
The G&CPS celebrated its inaugural year in 1964 with the first Germania Posta philatelic exhibition held in Stockton.
I am looking to build a collection of toy stamps and stationery, known as Kinderpost, Poste Enfantine (in France) or Liliput Mail (in the UK). Can anyone provide me with information on the German material that exists? Are there any publications or articles?