Draft Letter from Anton Bilimović, Director of the Mathematical Institute, to the Serbian Academy of Sciences regarding the books, office supplies and furniture required for the Institute. Belgrade, October 20, 1948 (1 page).
Letter from Anton Bilimović, Director of the Mathematical Institute, to the Serbian Academy of Sciences regarding the budget required for the year 1947 (1 page).
Draft Letter from Anton Bilimović, Director of the Mathematical Institute, to the Academy of Natural Sciences of the Serbian Academy of Sciences regarding the translation of scientific papers and publication of mathematics journals (1 page).
Draft Letter from Anton Bilimović, Director of the Mathematical Institute, to the Academy of Natural Sciences of the Serbian Academy of Sciences regarding the first three sessions of the Scientific Committee of the Mathematical Institute (6 pages).
Draft Letter from Anton Bilimović, Director of the Mathematical Institute, to the Academy of Natural Sciences of the Serbian Academy of Sciences regarding the foundation of the Mathematical Institute (1 page)
Letter from the Managing Board of the Mathematical Institute to the Academy of Natural Sciences of the Serbian Academy of Sciences regarding the election of Anton Bilimović as its president . Belgrade, May 16, 1946 (1 page).
Letter from Vojislav Mišković, Secretary of the Serbian Academy of Sciences, to Anton Bilimović, Representative of the Founding Committee of the Mathematical Institute. Belgrade, April 1, 1946 (1 page).