Did I skip it in the Tammeraut's Fate location? I see no mention of in any treasure listing but it mention as a solution ?
No, the paragraph on 160 mentions it directly. "one easy solution...." "...glue from the hermitage...."I don't have the book on me. Maybe it's mentioned as a solution just in case the players have access to it. Doesn't necessarily mean it's provided in the book.
I didn't take Ghosts of Saltmarsh to be a structured campaign in the way some of the adventure paths are. Rather it's a collection of adventures of varying levels that are unified by location and theme. The existence of assorted adventure hooks and ideas in the book supports this.