Roser is credited by some with having invented the Fig Newton (actually a pastry) or at least the process or machinery to make it, but Nabisco has never acknowledged these claims.
[1] In the early part of the 20th century Roser and his wife, Ruth, arrived in St. Petersburg where he built several hotels downtown as well as an office building and cafeteria on Central Avenue.
He opened his C. M. Roser Real Estate office at 695 Central Avenue in the building he had built.
In the early part of the 20th century, Charles Roser came down from St. Petersburg and partnered with him to form the Anna Maria Beach Company to develop the property by laying out streets and selling lots.
Roser had a real estate office within easy walking distance of the pier on the south side of Pine Avenue.