Mar 1925,
1925 Radio.in 1920.
27) Buyers Guide, Warsaw collection .
organization.XI
22) Miller reminiscences, lew York Public ledger.
29) Rational Ediphone Sales Conference, Jan 1925, D7
Phonograph.
26) Ediphone Competition Bulletin, #179, April 1931.P.
35) Durand Constable and Edison, Aug 1918, Phono
Ediphone.
31) Experimental costs the Ediphone rose from around $9,000
p.
24) Durand Gilmore, Mar 1907, Phono l. Meikle, Twentieth Century Limited Industrial Design in
America 1925-1939 (Philadelphia: Temple 1979), 82. This was the cost of
one experimenter, half time for assistant Works engineer,
and skilled mechanic.
25) Dyer Durand, April 1910, Phono, ph.
23) 1909, Phono Edison Business Phonograph.
32) Durand Edison, Jan 1918, Phono Ediphone. 1913/1914 $15,000 p. Ediphone minutes, experimental lists,
accounts.a.a.
34) Ediphone Buyers Guide, Warsaw collection.
33) Memo Constable, Development Work for Ediphone, lov
1919, Phono. Commercial
dept.
36) J.
28) Charles Edison Division Managers, Sept 1917, TAE Inc.L.
30) 78, Ediphone Business, May 1918, TAE Inc.
