I guess I should add - in order to get the recipes, you go to the individual sections in Heartwood to get the quests. ie go to the section that has bowmaking items. The quest giver will tell you what you need to make e.g. 10 bows. To turn them in you single click on yourself and toggle each quest item until you've filled the number required. Once you turn them in you will get a back pack as a reward with something in it - hopefully a recipe, but not always.
You were needing quivers which would be rewards from the tailoring section of Heartwood I believe, however I do have all the quiver recipes at the Market
Eleanor