1.
Pearson Street Books Vol 3 Page 142
2.
Molens in de Zwinstreek
Letter to Mr. Alfred Mills from K.L.M. Royal Dutch Airlines, December 9, 1960
Pearson Street Books Vol 3 Page 144B
Pearson Street Books Vol 2 Page 44B
Pearson Street Books Vol 2 Page 51B
Pearson Street Books Vol 2 Page 4B
Pearson Street Books Vol 2 Page 43B
Pearson Street Books Vol 2 Page 52B
Pearson Street Books Vol 2 Page 89B