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