- unitid
-
{"value"=>"1018744", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1889-1934", "type"=>"inclusive", "normal"=>"1889/1934"}
- date_inclusive_start
-
1889
- date_inclusive_end
-
1934
- keydate
-
1889
- date_start
-
1889
- date_end
-
1934
- unittitle
-
{"value"=>"IX. Writings & Speeches"}
- scopecontent
-
{"value"=>"<p>Contains his formal speeches and articles followed by scientific and technical notes, memoranda, and sketches on numerous inventions, most of which do not concern railroads.</p> <p>Scientific and technical notes & memoranda on: piano players (1903); utilization of high speed turbines with slow speed propeller (1909); two potential third rail systems under railway signal control (1909-1910); making of master records for phonographic reproduction (1910); cooling apparatus (1911); automatic air pressure differentiation (1911); inertia shock absorption for automobiles (1911-1913); simultaneous gun fire of ship's battery (1916); plain and helicopter types of airplanes (1931); miscellaneous sketches and drawings, (1906-1907); canal haulage, etc.</p>"}
- container
-
{"type"=>"box", "value"=>"101-104"}