At the Pasadena Conference of the A. L. A. in 1911, Miss Gertrude Andrus led a discussion on library work in summer playgrounds, in which she considered some simple methods of administration. Gertrude Elisabeth Andrus was born in Buffalo, N. Y., acted as an assistant in the Buffalo Public Library in 1900-1901; was a student in the Training School for Children's Librarians in Pittsburgh from 1902 to 1904; children's librarian in the Carnegie Library of Pittsburgh from 1903 to 1908, and since that time has been head of the children's department in the Seattle Public Library. The library in a summer playground serves a double purpose; it supplies books in a district not otherwise reached by the library and it acts as a lure to the use of the main library. If the books are attractive, the children will follow them to the main library and thus become permanent borrowers. So it is plain that the books we place in our summer playgrounds must be of the most popular type. Easy books, picture books, fairy tales, stories, histories, books of travel, and books on games and manual arts are the ones most in demand. A knowledge of the district in which the playground is located is also necessary. If the children have a school library and are accustomed to reading, the books sent to the playground will differ from the kind sent to one in a foreign district where little reading has been done. As the library room is invariably used for other work on other days, the books must be locked up. A satisfactory solution of this is a built-in bookcase with adjustable doors which may easily be lifted from their sockets and set aside when access to the books is desired, and may be replaced and padlocked when the day's work is done. The arrangement of the room and the charging desk should always be made so that the exit can be very carefully supervised.