The new electro-magnetic planchette, or, mysterious writer! With metallic plates on the top, is the most sensitive instrument in use ... [Boston n. d.].
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 82, Folder 8.
Tags
Date
1600 - 1800
Source
Library of Congress
Copyright info
Public Domain