It is a notebook, into which unsolved problems and mathematical puzzles were entered. Some of them were very serious issues, sometimes creating new directions in science, other were created for intellectual amusements. New Scottish Book is a continuation of Scottish Book created in Lviv during social meetings of mathematicians in a café called Scottish. It was transposed to Wrocław by Professor Hugo Steinhaus, and the first entry comes from 1946. For solving the problems one could get an prize, for example a chocolate bar from Edward Marczewski or a five-course dinner funded by Stanisław Hartman. The last entries were made by Kazimierz Głazek in 1987. Currently New Scottish Book contains nine hundred sixty five entries. It is stored in the Library of the Mathematics Department of the University of Wrocław.