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Logo Pacer Frits Wiersma
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1959 World Championships (amateurs)
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Berlin july 1963: First place and a new track record
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Stayer Jan Snoek & pacer Frits Wiersma 1937
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Publicity photo, august 1965
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World Championship Track Cycling 1948 Amsterdam (NED)
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World Championship Track Cycling 1948 Amsterdam (NED) (5)
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World Championship Track Cycling 1948 Amsterdam (NED) (4)
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World Championship Track Cycling 1948 Amsterdam (NED) (3)
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World Championship Track Cycling 1948 Amsterdam (NED) (2)
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World Championship Track Cycling 1948 Amsterdam (NED) (1)
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National Stayer Championship 1945 with Jan Pronk
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Pacer Champion 1938 with Stayer Groenewegen
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His 1st stayer champions
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Flyer velodrome of Zwartberg april 1933
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Professionals Wiersma & De Graaf 1933
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1959 Frits with stayer Wil Vreeswijk
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Parc-de-Princes Jan Pronk
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Victory Parade Recour 1950
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Once a stayer, now a pacer: Noppie Koch
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Stayer Henk Alkema and pacer Frits Wiersma 1936
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Passport 1948 page 14-15
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Passport 1948 page 16-17
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Passport 1948 page 18-19
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Passport 1948 page 20-21
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Passport 1948 page 22-23
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Passport 1948 page 24-25
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Passport 1948 page 26-27
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Passport 1948 page 28-29
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Passport 1948 page 2-3
