Sách nói: Mother Earth, Vol. 1 No. 4, June 1906

"Mother Earth was an American anarchist journal that described itself as "A Monthly Magazine Devoted to Social Science and Literature". Founded in early 1906 and initially edited by Emma Goldman, an activist in the United States, it published articles by contemporary activists and writers in Europe as well as the US, in addition to essays by historic figures." This is Volume 1 of the series - Summary by Wikepedia