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