publication by Hermann Knackfuß, volume 13 of the book series "Künstler-Monographien"

1st edition (1896) of the monograph by Hermann Knackfuß

6th edition (1923) of the monograph by Hermann Knackfuß

publication by Hermann Knackfuß, volume 5 of the book series "Künstler-Monographien"

German article in Die Gartenlaube, 1871, no. 6

publication by Hermann Knackfuß, volume 12 of the book series "Künstler-Monographien", 1896

publication by Hermann Knackfuß, volume 17 of the book series "Künstler-Monographien"

publication by Hermann Knackfuß, volume 7 of the book series "Künstler-Monographien"

publication by Hermann Knackfuß, volume 4 of the book series "Künstler-Monographien"

publication by Hermann Knackfuß, volume 10 of the book series "Künstler-Monographien"

German article in Die Gartenlaube, 1896, no. 43

picture by Hermann Knackfuß

publication by Hermann Knackfuß, volume 1 of the book series "Künstler-Monographien"

publication by Hermann Knackfuß, volume 3 of the book series "Künstler-Monographien"

publication by Hermann Knackfuß, volume 2 of the book series "Künstler-Monographien"

publication by Hermann Knackfuß, volume 29 of the book series "Künstler-Monographien"

monograph by Hermann Knackfuß, volume 6 of the book series "Künstler-Monographien"

German article in Die Gartenlaube, 1871, no. 16