Hello I am a novice in the field and am researching Frank N. Meyers plant collections from Asia and the environmental impact they had on the midwest during the 19th century. I am having some trouble tracing the concentration of some of his plants. I was wondering if any one had any recommendations or were aware of some of the relevant plant/seeds located in the midwest. ( websites,books,resources) gingko biloba ulmus pumila Meyer elm Thank you Crystal Delgado
