Mensch und Erde; Skizzen von den Wechselbeziehungen zwischen beiden (3rd edition 1910); later translated into English as "Man and earth; the reciprocal relations and influences of man and his environment"; London, G. Routledge & sons, limited (1914).
Unser Wissen von der Erde. Allgemeine Erdkunde und Länderkunde, in collaboration with other scholars (1886–93) – Our knowledge of the Earth. General and regional geography.
Volapük : easy method of acquiring the universal language (constructed by Johann Martin Schleyer, prepared for the English-speaking public on the basis of Alfred Kirchhoff's "Hilfsbuch"; with the addition of a key to the exercises and a Volapük-English and English-Volapük vocabulary, by Klas August Linderfelt).