Espy's patent conical ventilator. [Description of] James P. Espy. Washington 1842.
Summary
Available also through the Library of Congress web site in two forms: as facsimile page images and as full text in SGML.
Printed Ephemera Collection; Portfolio 197, Folder 17.
Tags
Date
01/01/1842
Contributors
Espy, James P.
Source
Library of Congress
Copyright info
Public Domain