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Baker, H. G. (1958). "Origin of the Vasculum"(PDF). Proceedings of the Botanical Society of the British Isles. 3: 41–43. Archived(PDF) from the original on 4 February 2014. Retrieved 25 August 2014.
"L'herbier, un outil pour le botaniste" [The herbarium, a tool for the botanist] (in French). La Garance voyageuse. Archived from the original on 2017-12-31. Retrieved 2006-12-20. with image
Baker, H. G. (1958). "Origin of the Vasculum"(PDF). Proceedings of the Botanical Society of the British Isles. 3: 41–43. Archived(PDF) from the original on 4 February 2014. Retrieved 25 August 2014.
J.E., Mygatt (2001). "A Case for Collecting"(PDF). Iowa Native Plant Society Newsletter. 7: 3. Archived(PDF) from the original on 20 June 2010. Retrieved 25 August 2014.
"The Vasculum". Archived from the original on 2020-02-10. Retrieved 2021-09-23. The website contains links to all issues of The Vasculum
"The Vasculum". Society of Herbarium Curators. 15 September 2014. Archived from the original on 4 February 2018. Retrieved 11 February 2018.