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