Patrons were permitted to borrow one book at a time , for up to one month .
Books were available in American Braille , New York Point , Boston line , or Moon type , depending on the reader 's preference of embossed alphabet .
Patrons were permitted to borrow one book at a time , for up to one month , and books were available in American Braille , New York Point , Boston line , or Moon type , depending on the reader 's preference of embossed alphabet .