Signatures of Jean Timon-David and Ferdinand Van Gaver on the cover of their joint 1937 publication (Van Gaver and Timon-David 1937), now in the Saint-Charles University Library, Aix Marseille University.

  
  Part of: Nève G, Lair X, Lebard T, Meunier J-Y, Teste L-J, Séguinel L (2024) Hoverflies of the Timon-David collection (Diptera, Syrphidae). Biodiversity Data Journal 12: e117265. https://doi.org/10.3897/BDJ.12.e117265