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