Over the years Léon Roks has built up a beautiful list of references. Below is a random selection of these acknowledgments to Léon:

► Jelle Jellema nijverdal
55e npo periqueux 2.667 pigeons
► Granddaughter Don Leo [sumerian fighter]

► Herman Hendrix Broekhuizenvorst
► Granddaughter of Don Leo (Sumerian Fighter)
Anouk: 13e NAT Agen 10.527 pigeons
15e NAT Barcelona 4.477 pigeons
22e INT Barcelona 12.315 pigeons
► Granddaughter of Don Leo (Sumerian Fighter)
Jesse: 47e NAT Agen ZLU 5.480 pigeons
► Granddaughter Don Leo (Sumerian Fighter)
129e NAT Bordeaux NPO 3.440 pigeons

► Harrie de Jong Nieuw-Vossemeer
► Grandson Don Leo (Sumerian Fighter)
192e NAT Agen ZLU 5.480 pigeons

► Jelle Jellema Nijverdal
► Granddaughter Don Leo (Sumerian Fighter)
39e NAT Narbonne 6.725 pigeons

► Batenburg vd Merwe Klaaswaal
► Son Don Leo (Sumerian Fighter)
92e NAT Rieux-minevois (Perpignan) 3.354 Pigeons

► Johan Scheepmans Wommersom (BE)
173e NAT Narbonne 4.140 pigeons (a half Léon Roks)

► Frederic De Scheemaeker Ezemaal (BE)
35e NAT Agen 5.955 pigeons (yearling, a half Léon Roks)
49e INT Agen 14.799 pigeons (yearling, a half Léon Roks)
100e NAT Montelimar 2.832 pigeons (yearling, a half Léon Roks)

► C. van Beek from Etten Leur with a 61e NPO Bordeaux
► Ant. De Jong from Noordhoek 13e NPO Dax
► Nico Meeusen from Roosendaal 5e champion pigeon Brabant 2000
► J. v. Vlimmeren en Zn. , Jan Veeken, R. van Baal, Gebr. Van Peer and so on.

► Also by his father M. Roks of Standdaarbuiten is a topper of Léon with a 26e NPO Tarbes, 86e NPO Dax, 134e NPO Bergerac, 143e NPO St. Vincent, 147e NPO St. Vincent and so on.

In 2018 there were several beautiful references:
► Ad van Hout, Made: 33e NPO Agen
► Dick de Jong, Sprang-Capelle: 4e NPO Agen and 9e NPO Perigueux
► Cees van Beek, Etten-Leur: 10e NPO Bergerac
► Frederic de Scheemaeker, Ezemaal (B) and Gero Dijk (Alblasserdam) are very satisfied with their new pigeons from Léon.

‘De 331’ of Comb. De Pijper from Hoeven is bred by Léon. She won in 2018 27e national Barcelona 2018 (75e international against 15.700 pigeons).

For 2018 of this pigeon:
2e NPO Daxc against 1.266 pigeons
9e NPO St. Vincent 1.745 pigeons
15e NPO Dax against 1.234 pigeons
27e NPO Tarbes against 1.177 duiven
39e NPO St. Vincent against 1.746 pigeons
224e NPO Bergerac against 3.425 pigeons
269e NPO Bordeaux against 3.371 pigeons
450e NPO Cahors against 2.713 pigeons
9e National Champion Pigeon 2016
2e Champion Pigeon Brabant 2000 in 2016
15e Champion Pigeon Brabant 2000 in 2017

A whopper!!!