Casey Jo White of #philatelythings presents, "Introduction to Local Posts"; enjoy this fascinating Stamp Chat on a unique aspect of post. After providing definitions and examples of local post, Ms. White applies the theory of local posts and creates her own called "Piggyback Post" and invites you to do the same. 

You can purchase, Piggyback Post items from Casey Jo here; proceeds benefit a local gallery that Ms. White is housing her local post form. 

Ms. White has graciously shared her Locals101_SlideShow as well as provide the following links from her Stamp Chat. 

Local Posts Resource Guide

Classic carriers, local posts, and independent mails:
Carriers and Locals Society - https://www.pennypost.org/

US Philatelic Classics Society - https://www.uspcs.org/
Frajola - https://www.rfrajola.com/

Western expresses and mail routes (Wells Fargo, Pony Express, etc.):
https://www.westerncoversociety.org/

Transitional and modern period:
Drummond's Catalog of Philatelic Miscellany - 

Modern local posts:
Local Post Collectors Society - https://www.localpostcollectors.org/