Smithsonian Magazine: Author Tim Hensley, who himself opened up an antique apple mail-order nursery, relates his own personal quest into the field of historical pomology, a journey that not only takes him back to his own great-great-grandfather but out into the field where he discovers the Reasor Green , which had been thought to be extinct.
Article in Smithsonian magazine,
http://www.smithsonianmag.si.edu/smithsonian/issues02/nov02/apples.html