２０世纪上半叶在华盛顿的军医图书馆（外科军中图书馆）中，所收藏刊物之丰富可称世界之冠。在１９１６年每年收到 １１８９５种，１９２５年增至１１ ９２７种。在外科军中图书馆的目录索引中，从 １８８０年至１８９５年的这一段时期，其列入的不同刊物是４ ０２０种；１９ In the first half of the twentieth century, the library of the Military Medical Library in Washington (Survival of the Central Military Library), the collection of publications rich can be called the highest in the world. In 1916, 11,895 species were received each year, up from 1927 to 11,927 species. In the directory index of the surgical military libraries, there were 4 020 different publications included in this period from 1880 to 1895; 19