REPORT OF THE SECRETARY 97 
Charles W. Dahlgreen, artist, presented 18 additional copper plates 
of his etchings and drypoints, making 94 in all, which are being used 
for printing the Smithsonian edition of his work (described in last 
year’s report). Mr. Dahlgreen also gave 126 drypoints and etchings 
and 1 block print in color, further representative of his life work 
in the field of printmaking. Another interesting gift in graphic arts 
was Walter Tittle’s “Arms Conference Memorial Folio” containing 
25 autographed drypoint portraits of statesmen who attended the 
Conference on Limitation of Armaments, 1921-22. Historically 
valuable photographic equipment received included the machines used 
in Germany as early as 1904 by Dr. Arthur Korn in transmitting 
photographs by electricity; a radar camera of World War II; and 
a motion-picture camera and projector dating from about 1885, which 
came as a loan. 
History—About twice as many specimens were received in the divi- 
sion of history this year as last year. Accessions to the costumes col- 
lection were noteworthy. The dresses that since 1915 have repre- 
sented the administration of President Benjamin Harrison in the 
collection of dresses of mistresses of the White House, were pre- 
sented to the Museum. Mrs. Calvin Coolidge presented a fan, neck- 
lace, and handkerchief to go in the case containing the dress of Mrs. 
Coolidge presented by her in 1930. The general collection of Ameri- 
can period costumes was enriched by the addition of four dresses 
dating, respectively, from 1814, 1855, 1861, and 1894—each in an 
excellent state of preservation and each a fine example of the period 
it represents. 
The military collection was increased by the gift of a Japanese 
parachute found in New Guinea. A collection of United States Army 
insignia and a series of topographic maps, all of World War II, were 
received from the War Department. To the naval collection were 
added 87 models of United States, French, and British warships 
of World War II, and more than 700 pieces of naval insignia, from 
the Navy Department. 
The numismatic collection was increased by about 100 coins and 
medals and the philatelic collection by 1,700 postage stamps. 
EXPLORATIONS AND FIELD WORE. 
Although field explorations during the year were not extensive, 
they represented a return toward the regular schedule of such activi- 
ties in times of peace. 
Dr. E. A. Chapin, curator of insects, in connection with the State 
Department’s program for the promotion of cultural relations with 
