Spencer, John Wallace.

No Earthly Experiment. Mankind : A Space Experiment.

New York, Bantam Books, 1975. Octavo. 178 pages. Original Softcover. Secondhand book in very good condition.

Taku, Mayumura.

Administrator. Translated by Daniel Jackson.

Tokyo, Kurodahan Press, 2004. Octavo. 209 pages. Original Softcover. Secondhand book in very good condition.

Clarke, Arthur C.

Prelude to Space.

UK, The New English Library, 1968. Octavo. 159 pages. Original Softcover. Secondhand book in very good condition.