Third edition of "V.A.P.-Sternkarten in gnomonischer Projection" published by the "Vereinigung von Freunden der Astronomie und kosmischen Physik“ (Association of Friends of Astronomy and Physical Cosmology).
The maps were created by Carl Rohrbach; he drew them in 1894.
The VAP was founded on May 19, 1891 by Wilhelm Förster, Director of the Royal Observatory in Berlin.