Secrétaire géneral: v. 1-18, F. Camille Dreyfus; v. 19-22, v. 23-31, André Berthelot.
Vols. 23-31 published by Société anonyme de La grande encyclopédie.
The following information regarding dates of publication of each volume is supplied by Dr. C. Wardell Stiles of the U.S. Department of Agriculture: v. 1. Jan. 1886-6 May 1886. v. 2. 13 May 1886-28 Oct. 1886. v. 3. 4 Nov. 1886-21 Apr. 1887. v. 4. 28 Apr. 1887-13 Oct. 1887. v. 5. 20 Oct. 1887-5 Apr. 1888. v. 6. 12 Apr. 1888-27 Sept. 1888. v. 7. 4 Oct. 1888-21 Mar. 1889. v. 8. 28 Mar. 1889-12 Sept. 1889. v. 9. 19 Sept. 1889-6 Mar. 1890. v. 10. 13 Mar. 1890-31 July 1890. v. 11. 7 Aug. 1890-20 Nov. 1890. v. 12. 27 Nov. 1890-19 Mar. 1891. v. 13. 25 Mar. 1891-16 July 1891. v. 14. 23 July 1891-7 Jan. 1892. v. 15. 14 Jan. 1892-30 June 1892. v. 16. 14 July 1892-22 Dec. 1892. v. 17. 29 Dec. 1892-15 June 1893. v. 18. 22 June 1893-7 Dec. 1893. v. 19. 14 Dec. 1893-31 Mar. 1894.
v. 20. 7 June 1894-15 Nov. 1894. v. 21. 22 Nov. 1894-16 May 1895. v. 22. 22 May 1895-30 June 1896. v. 23. 6 Aug. 1896-11 Aug. 1898. v. 24. 18 Aug. 1898-2 Feb. 1899. v. 25. 9 Feb. 1899-27 July 1899. v. 26. 3 Aug. 1899-30 Nov. 1899. v. 27. 7 Dec. 1899-3 May 1900. v. 28. 3 May 1900-29 Oct. 1900. v. 29. 2 Dec. 1900-4 Apr. 1901. v. 30. 7 Apr. 1901-7 Sept. 1901. v. 31. 14 Sept. 1901-10 Sept. 1902.