No issues published for May 1872, May-Sept. Dec. 1873, May-Sept. 1874, Mar.-June, Sept.-Nov. 1875, Sept., Dec. 1876, Mar.-Apr., July, Oct.-Dec. 1877, June 1878-Apr. 1879, June 1879-May, Aug.-Oct. 1882, Jan.-May 1883.
Vols. [1-12] (May 1871-Apr. 1872) form anno [1]; v. [13-19] (June/July 1872-Mar./Apr. 1873) form anno 2; v. 20-26 (Oct./Nov. 1873-July/Aug. 1875) form anno 3.
Issues for out./nov. 1873-