5 USPS crimes investigated by postal inspectors which included the 'Black Hand Gang', Charles Ponzi and more

Since it was established in 1775, the United States Postal Inspection Service (USPIS), which was founded by Benjamin Franklin, has been investigating mail-related crimes.

Just last year, there were a reported 4,728 arrests made and 4,103 convictions related to postal crimes, according to the U.S. Postal Service. Most of these crimes fell into the categories of mail theft, assaults and robberies of employees, mail fraud as well as prohibited mailings, according to the source. 

There...