1924

• 

  Someo 1924 (Switzerland)
  (16 Images)

1928

• 

  Liechtenstein 1928
  (21 Images)

1931

1932

• 

  Brynmwar 1931-1932 (Wales, Great Britain)
  (8 Images)

1934

• 

  Les Amburnex - Mont Bailly 1934 (Switzerland)
  (11 Images)

1935

• 

  Bihar 1935 (India)
  (10 Images)

1938

• 

  Oakengates 1938 (Great Britain)
  (14 Images)

1945

• 

  St.Stephan 1945 (Switzerland)
  (8 Images)

1946

• 

  St.-Ghislain 1946 (Belgium)
  (7 Images)

• 

  2nd IDM Herzberg 1946 (Switzerland)
  (15 Images)

1948

• 

  Bossu Bois 1948 (Belgium)
  (11 Images)

• 

  Work and Sing (1948)
  (17 Images)

• 

  St.Stephan 1948 (Switzerland)
  (13 Images)

1950

• 

  Imst 1950 (Austria)
  (4 Images)

1951

• 

  Polegate 1951? (Great Britain)
  (3 Images)

• 

  Stuttgart-Rohr 1951 (Germany)
  (10 Images)

1955

• 

  Warsaw 1955 (Poland)
  (10 Images)

1956

• 

  Nice 1956
  (3 Images)

1958

• 

  Cisna 1958 (Poland)
  (10 Images)

1963

• 

  Dousadj 1963 (Iran)
  (6 Images)

• 

  Children's drawing, Sidi Larbi (1960s)
  (6 Images)

1967

• 

  Dhaka 1967
  (6 Images)

1977

• 

  Volunteers of OHP, Warsaw 1977? (Poland)
  (4 Images)

• 

  Creux-du-Van 1970-1977
  (8 Images)

1985

• 

  Veliko Tarnovo 1985 (Bulgaria)
  (3 Images)

1988

• 

  Minsk 1988
  (7 Images)

1991

• 

  Workcamps Romania 1991
  (4 Images)

• 

  Mymensingh 1991 (Bangladesh)
  (6 Images)

1997

• 

  Baucina 1999 (Italy)
  (5 Images)

2006

• 

  Luigj Gurakuqi School Tirana 2006 (Albania)
  (4 Images)