Harvard University. Gray Herbarium

• Amendments to the Paris code of botanical nomenclature, suggested for the consideration of the Vienna congress of 1905 by the botanists of the Gray herbarium, the Cryptogamic herbarium, and the Botanical museum of Harvard university
• Memoirs
• Asa Gray correspondence files of the Gray Herbarium
• Contributions from the Gray Herbarium of Harvard University
• Gaspe Peninsula Collecting Papers
• Gray Herbarium index
• Gray Herbarium index; Harvard University
• Letters of the Gray Herbarium file
• Plantae exsiccatae Grayanae
• Propositions de changements aux lois de la nomenclature botanique de 1867 dont l'adoption est recommendée au Congrès international de nomenclature botanique projeté à Vienne en 1905