I am looking for some information on a old German Nurseryman. The comany was H.E.BORN, 5810 Witten-ruhr, Peatalozziplatz 13.
This gentleman advertised habitat collected Mammillaria seed in the UK Mammillaria Soicety Journal between 1963-64.
I am trying to obtain a copy of the Mammillaria Section of the seed list. A bit of a long shot I know but you would be surprised what people keep.