There are 3 titles associated with this person.

Masson, Charles F. P. Elmina; or, The Flower that Never Fades. A tale for young people. London: Elizabeth Newbery, 1791.
Masson, Charles F. P. Elmina; or, The Flower that Never Fades. A tale for young people. London: Elizabeth Newbery, 1794.
Masson, Charles F. P. Elmina; or, The Flower that Never Fades. A tale for young people. London: Elizabeth Newbery, 1800.