Linderfelt Klas August
Tidabuk fa el Linderfelt pro Linglänapükans (1888)
Linderfelt, K. A. Volapük. An easy method of acquiring the universal language, constr. 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. — Milwaukee : C. N. Gaspar, H. H. Zahn, 1888.