Florida in 1821 was transferred from Spanish to American control and the need of providing the territory with internal and external lines of communication was a problem that called for immediate solution. The post office department, which had the responsibility of transporting the mails, played a major role in helping meet the Florida situation. Creating internal communication routes proved formidable since post offices, post roads, and postal personnel had to be supplied before mail service could exist.
Stanaback, Richard J.
"Postal Operations in Territorial Florida, 1821-1845,"
Florida Historical Quarterly: Vol. 52
, Article 5.
Available at: https://stars.library.ucf.edu/fhq/vol52/iss2/5