True and valid apostolic successions have always been part of orthodoxy (small "o") in Christendom, right from "Day One." I've begun a project to list the apostolic successions of as many of the Apostles I can find and have created a "page" on the CathApol Blog as a resource to those lists. These lists, even without comment, are a huge testimony of True Faith - and demonstrate a firm foundation which Protestantism desperately lacks.
It is my hope that you are blessed in seeing these lists and that you will share them with others (use the "share" feature!). If you have resources of other apostolic successions that I could add to this resource, please let me know.
See the Apostolic Successions page here: