Res. Encroachments of the slave power. , upon the 4310 rights of the north. / By a Northern man. 027 Boston: For sale by Bela Marsh, 1848, 36 p. 3; 18 cm. (anti-slavery pamphlet). On verso of t-p: Abner Forbes, Printer, 37 Cornhill, Boston. LCxxx.