Signedstamped on envelope: EDMUND SALVAGE COMPANY / OAKLYN-AUDUBON, NEW JERSEY
Inscribedstamped on envelope: Stock 6017 One Achromat Lens / Dia. 12 mms F. L. 80 mms / Reflection Coated
in pencil on reverse of envelope: 6017
on reverse of envelope: SUBSTITUTE- WE ARE / COMPLETELY OUT OF ITEM YOU / ORDERED AND HAVE SUBSTITUTED / THIS AS BEING CLOSEST ITEM.
ProvenanceSalvaged from the Science Center Prep Room, courtesy of Prof. Owen Gingerich.