DOCUMENTS - handwritten note, translation text of tape received in morse code november 4, 1898 between 2:05 and 2:15 p.m. - rare period document: 6 blue Morse strips glued to beige card (17.5 x 24 cm.) "wireless telegraph experiments carried out on E.Ducretet's apparatus : . Sacré Coeur...Eglise Sainte Anne de la maison blanche distance 6 km 640 . Sacré Coeur- Panthéon 4 km 400 . Sacré Coeur - Panthéon 4 km 400 . Wireless transmission between the Eiffel Tower and the Panthéon 4 km - November 4, 1898 . Received at Villejuif on April 21 1899 distance 3 km 500 . from rue Bernard to Villejuif 5 km 300". - extract from the newspaper "L'Eclair", November 1898 - extract from "Petit Journal", April 4 1899 - extract from press article - photo taken at the top of the Eiffel Tower during the 1st radio link on November 5, 1898 with Ducretet - Roger seated on the left of the camera - and Mascart, member of the Institut (18 x 23.5 cm.) - 2 old photos of the first antenna installed on Ducretet's laboratory building at 75 rue Claude-Bernard (24.5 x 18 cm. accdts.) - 2 plans N°1282A: 1st, December 1899, "see corrections on original drawing", canvas paper (51 x 378.5 cm.). The 2nd, January 1901, Indian ink on heavy paper, initialed E.D. and signed (35.5 x 53.5 cm.). - commercial card (?) F.80 A, photo and technical details E. Roger...Oslo le...193...(10 x 14 cm.) - 22 handwritten military messages "F. L." from August 13, 1914 at 11 a.m. to September 12, 1914 at 11:50 p.m. Enclosed explanatory note dated September 29, 10:50 a.m. - Announcement of death Mme Edouard Roger mother of Ernest Roger, 1917. Verso "les troupes françaises" November 11 11 h. - Handwritten retransmissions of F.L. radiotelegrams relating to the 1918 Armistice talks: January 28, 3 p.m. November 8, noon, 3 p.m. November 9, noon, 1:30 p.m., mention: "received in Paris on paper tape recorder morse receiver by E. Roger". November 11, 10 a.m. Enclosed: press clipping: the plenipotentiaries' report to the Chancellor. - extract from "TSF REVUE" of August 21, 1926, 3 sheets, cover with photo of Ernest Roger ((as is). - service record of Mr. Ernest Roger, director of the Ducretet company, from 1864 to 1926. - extract from "La vie illustrée": our military secrets. - 4 old photos: transmitter 1908? 3-lamp receiver and 3-lamp multiplier 1923?, morse code apparatus and transmitter. shop front (2) - 9 old photos relating to Ducretet's premises at 75, rue Claude Bernard: radiography of a live child by Ducretet et Lejeune (1), store front/workshop (2), exhibition stand (1), workers' workshops (2), test laboratory, mastery, tests (3 including 1 laminated on strong cardboard), Ducretet Roger constructeurs advertising document (1). Various formats, processes, condition. - letter of balance of sale of 475 shares from Roger, director of Établissements Ducretet, to Société des Établissements Ducretet, January 8, 1931. - portrait photo of Ernest Roger, handwritten inscriptions including September 5, 1932 ( 18 x 13 cm.) - photocopy of marriage certificate of Ernest Roger and Louise Elisabeth Miet, Paris June 10, 1938. -3 copies of typewritten leaflets on the life of Ernest Roger (undated, anonymous). - prospectus on radio disintegration, by Turenne, SGDG patent-holder. - extract from "Figaro", November 2, 1948. - loan file to ORTF for exhibitions in 1965-66 and 1977.