Dr. Kubassek János: Cholnoky Jenő természetábrázoló művészete (Érd, 2002)

Judit Berta-Varga-Katalin Bognár Catalogue of the Photographs, from the department of Historical Photographs of The Hungarian National Museum (Budapest) (Exhibition in the Hungarian Geographical Museum, Érd, 22 January - 15 April 2002)

Police boat on the Great Canal in March 1897. celloidine, stuck onto cardboard Cardboard: 32.8x23.9 cm picture: 17x12.5 cm Pressmark: Kína 248. original negative: Kh.l8.*glass, 13x18 cm Caption: " Police boat on the Great Canal. 29.III.1897." The positive belongs to the MFM Cholnoky inheritance; negative: MNM ELTE deposit, LII/943. The canals substituted Chinese long-distance traffic. Because of the dense network of canals, loads of bridges had to be built in towns. Cart tracks were almost unknown at that time, except around Shang-hai. So it can be understood, why the policemen did travel by sailing-boat. 42. The region of the Etna's crater in March 1907. Stereo recording. silver-gelatine, stuck onto cardboard Cardboard: 32.7x23-9 cm picture: 2 pieces, 7x15.2 cm each Pressmark: It.281. original negative: Caption: " Etna. Fumarole behind the observatory, at the foot of the main crater." " Etna. View from the slope of the main crater towards the north. A sea of clouds. ." MNM ELTE deposit: L 97/28 In the spring 1907, Cholnoky already teaching in Kolozsvár and his students participated in an Italian field trip, accepting the imitation of Lajos Lóczy Senior. They set off in the early hours of 26 March to conquer the more than 3000 metres high, giant volcano. Because of the difficult terrain, the suffocating gases and the air growing sparser, only a part of the company was able to reach the observatory near the peak. Even the aging professor, Lóczy, did not risk to climb higher. The concave depression of the crater covered with stones was a disappointment to Cholnoky and to some of his steady companions.