Carey, M. (1831). Brief view of the system of internal improvement of the state of Pennsylvania: Containing a glance at its rise, progress, retardation, -- the difficulties it underwent, -- its present state, and future prospects (2nd ed.). Philadelphia: Society for the Promotion of Internal Improvement.

Carey, Mathew. Brief View of the System of Internal Improvement of the State of Pennsylvania: Containing a Glance At Its Rise, Progress, Retardation, -- the Difficulties It Underwent, -- Its Present State, and Future Prospects. 2nd ed. Philadelphia: Society for the Promotion of Internal Improvement, 1831.

Carey, Mathew. Brief View of the System of Internal Improvement of the State of Pennsylvania: Containing a Glance At Its Rise, Progress, Retardation, -- the Difficulties It Underwent, -- Its Present State, and Future Prospects. 2nd ed. Philadelphia: Society for the Promotion of Internal Improvement, 1831.