TY - BOOK AU - North Branch (Writer) TI - A review of the question of the outlet lock at Black's Eddy [electronic resource] KW - Locks (Hydraulic engineering) -- Pennsylvania. KW - Canals -- Pennsylvania. KW - Delaware River (N.Y.-Del. and N.J.) A2 - Lehigh Coal and Navigation Company CY - [United States? M1 - Subscription and registration required for access. N1 - Signed: North Branch. N1 - Reproduction of original from Kress Library of Business and Economics, Harvard University. N1 - Goldsmiths'-Kress no. 31629.18. PY - 1840 M1 - Accessed from https://nla.gov.au/nla.cat-vn6027244 ER -