Blog Gallery P.O. Box 17 was founded by Tomasz Sikorski in 2015. In the same year, the author posted on the blog several subsequent entries, presenting in them: the history and calendar of the gallery, publications signed by it, as well as photos documenting three events organized by the gallery (exhibition and theoretical session Documentation and self-documentation in art, performance by Krzysztof Zarębski with the participation of Elektra Kurtis and the exhibition and photo session Photography - current status). The blog is an easy to use source of knowledge and historical materials about the activities of Gallery P.O. Box 17.