*Bentley 61.M2.1851 Mayhew, Ira. A practical system of book-keeping. (cont.)
Same. 1870. *Bentley 61.M<.1870 Same. [60th edition.] Nichols & Hall. [1872.] ee8 pp. Plate. 19 cm., in 6s. *Bentley 61.M2.1872. The date is on the cover.
Same. [1875.] *Bentley 61.M2.1875. The date is on the cover.
Same. [140th edition. Hell & Whiting. 1880.] *Bentley 61.M2.1880.