Erwin Ackerknecht (1880 Baiersbronn – 1960 Ludwigsburg) – professor, philosopher, educator, writer and librarian, longtime director of founded in 1905 City Library at Grüne Schanze street (ul. Dworcowa) in Szczecin. He took care of the development of Community Libraries on the territory of Szczecin and all the Pomerania province. He realized many innovative projects, such as a library for the blind, music library or the first in Pomerania road library with printed catalogue of all the collection. He was gathering special book collections for students, prisoners, patients of hospitals. Vending machines selling newspapers and books appeared in the streets. He founded Community University, a modern school for librarians, co organized not operating these days cinema Urania, organized meetings with poets and theatre performances, wrote books and articles to librarian magazine he edited. In 1934 Nazi regime interrupted his activity. He focused mainly on increasing the collection of the founded by him Pomeranian Bibliographic Archive. He left Szczecin with his wife in March 1945.