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