Education Henry Garret Kosters Posted by Marquis Who's Who on February 5, 2019January 29, 2019 Title: Director of Research and Information (Retired) Company: Associate School Boards South Dakota Industry: Education Years in industry: 51 Years affiliated with Marquis Who’s Who: 29 Contact Henry Garret Kosters: Go backYour message has been sent Name(required) Warning Email(required) Warning Website Warning Comment(required) Warning Warning. Submit Δ Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Related