Cassey owned many Philadelphia rental properties, The 1820s and 1830s Cassey had worked as Treasurer to the Haytien Emigration Society. In 1818, he served as an officer at the Pennsylvania Augustine Society (also known as the Augustine Education Society of Pennsylvania), a group that supported African American schools, and which helped network him with other people active in resettlement. One of those Haitian resettlement supporters was Francis Webb, Secretary to the Haytien Emigration Society and the Philadelphia-based distributor for
Freedom's Journal from 1827 until 1829. After Webb's death in 1829, the Cassey family remained close to Webb's children, including youngest son and future author,
Frank J. Webb. In 1831, Cassey attended as a delegate the First Annual Convention of the People of Color in Philadelphia, a
colored convention with a focus on building and supporting African American education. home of
Yale University, which met with resistance from the local townspeople. Cassey became an early agent in Philadelphia of
The Liberator, (1831–1865), an early abolitionist newspaper published by
William Lloyd Garrison in Boston. Cassey actively funded and distributed the newspaper in Philadelphia, working alongside James Forten,
John P. Burr, and James McCrummill to promote the newspaper. A significant number of the founders of Gilbert Lyceum had also helped found the earlier
Philadelphia Female Anti-Slavery Society (PFASS) in 1833. Cassey died on January 9, 1848, and is buried in the Saint James the Less Episcopal Churchyard in Philadelphia. == See also ==