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