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