In Toumey's 2008 article "Reading Feynman into Nanotechnology",[20] he found 11 versions of the publication of "Plenty of Room", plus two instances of a closely related talk by Feynman, "Infinitesimal Machinery",[21] which Feynman called "Plenty of Room, Revisited" (published under the name "Infinitesimal Machinery"). Also in Toumey's references are videotapes of that second talk. The journal Nature Nanotechnology dedicated an issue in 2009 to the subject.[22][23]