In his message, "Bernie Hirsch" wrote
I ran "Yogostool" through the shtetlseeker search engine using a D-MBernie,
Authors of the popular Jewish Gazeteers WOWW (Where Once We Walked) lists
several alternative names for Augustow:
"Agustov, Augustov, Oygstova, Yagestov, Yagistov, Yagustova"
I believe that "Yogostool" fits into the family of the alternative names