90 REPORT OF NATIONAL, MUSEUM, 1924 



planes for mail transportation. The Hendee rotary gas engine used 

 in the airplane at that time has been added to the aircraft collection, 

 being the gift of Earle Ovington, Santa Barbara, Calif., who was the 

 airplane pilot. Still another historically important airplane to be 

 added to the collection was the Fokker airplane T-%, which made a 

 nonstop flight in May, 1923, from the Atlantic to the Pacific coasts 

 in a little less than 27 hours, piloted by Lieutenants Macready and 

 Kelley, of the Air Service, War Department. This plane was re- 

 ceived as a transfer from the War Department. 



The division's efforts toward rounding out the collections in the 

 section of communication were brought materially closer to a success- 

 ful goal by the gift of the Automatic Electric Co., Chicago, 111., of a 

 complete working unit of the Strowger automatic telephone system, 

 made by this company. By automatic is meant the total elimination 

 of telephone operators to make connections between phones. It is 

 exhibited in the vicinity of the telephone equipment developed by 

 Alexander G. Bell and forms an interesting and valuable addition to 

 the communication collections. Not only is every bit of the equip- 

 ment visible but also three telephones are mounted on the outside of 

 the exhibition case so that by the use of them visitors can see 

 the system in complete operation. From the American Tele- 

 phone & Telegraph Co. there were received as gifts two original 

 pieces of the very early Bell telephone equipment consisting of 

 one of the first box telephones ever put into commercial use, 

 the particular instrument being one of a pair used by Alexander 

 Graham Bell in a test made between Boston and Salem, November 

 26, 1876; and the first form of telephone transmitter used commer- 

 cially in 1886. This company also presented replicas of four pieces 

 of Doctor Bell's, first experimental telephone apparatus. From E. E. 

 Cole, Washington, there was received as a loan a form of telegraph 

 apparatus known as the typewriter telegraph transmitter. This ap- 

 paratus was invented by Charles E. Yetman in 1894 and developed 

 for commercial use by the Eemington Typewriter Co. Its particu- 

 lar feature is that an ordinary universal typewriter keyboard is 

 used to transmit telegraphic messages in the Morse code. In other 

 words, a single depression of a typewriter key transmits in Morse 

 code the character depressed on the keyboard, thus eliminating as 

 essential a knowledge of the Morse code on the part of the operator 

 and also reducing the number of arm movements to transmit a Morse 

 code character. 



Of great value in the visualization of developments in the auto- 

 motive industry is the accession received as a gift of the Cadillac 

 Motor Co., Detroit, Mich., consisting of one of the first automobiles 



