I am interested in the Press-Ewing seismographs, both vertical and horizont=
al, made by Lehner & Griffith in California in the late 1950s or early 1960=
s. Thanks for your help.

Deborah Warner
Curator, Physical Sciences Collection
National Museum of American History
Smithsonian Institution
Washington, D.C. 20013-7012

I am interested =
in the Press-Ewing seismographs, both vertical and horizontal, made by Lehn=
er & Griffith in California in the late 1950s or early 1960s. Thanks fo=
r your help.
 
Deborah Warner
Curator, P=
hysical Sciences Collection
National Mus=
eum of American History
Smithsonian Inst=
itution
Washington, D.C. 20013-7012=
 
=