Dear friends and colleagues, We would like to announce that the 102nd edition of the PSSL (Peripatetic Seminar on Sheaves and Logic) will be held at the University of Santiago de Compostela, Spain, the weekend of 13th - 14th of January 2018. Online registration is already available via the seminar webpage: http://www.usc.es/regaca/pssl102/ We hope to see you soon, Xabier Garcia-Martinez Tim Van der Linden [For admin and other information see: http://www.mta.ca/~cat-dist/ ]