On Thu, July 29, 2010 08:08, lookaround360@xxxxxxxxxxxxxxxxx wrote: > > > It seems to me there are any number of ways to authenticate these > materials including neg holder marks, etc. Given that these are (claimed to be) survivals from a period that little else survived from, there may not be a lot of contemporary negatives to compare film holder marks to, though, I realized when I thought about it a bit more. > Most obvious would be the > changes in vegetation and geology. My friends who return to scenic > locations year after year to photograph can point out missing trees, > erosion and so on in in subsequent pictures. That would tie down the time more precisely, but I don't see how that brings us much closer to identifying the photographer. > Also to another point RE duplicate shots, AA's work methods > in early career most likely were not the same as he matured. "Most likely", yes. And we don't have the other early negatives to compare to how he worked then. -- David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info
