Ivan A. Reinwald (A; https://www.geni.com/people/Ivan-Reinwald/6000000052529043831), inspector of the Mining Industry of Estonia, leading researcher of the Kaali crater field since 1927, and the principal impact characters documented by him: tilted dolomite strata in the upper part of the interior wall of the Kaali crater (cf. with Fig. 6), with Reinwald in the foreground (B); shattered meteoritic iron pieces from craters no. 2 and 5 (C), and Kaalijärv viewed from aeroplane of Estonian Air Defense in 1938 (D); from Fisher (1936, p. 298; B) and Reinwald (1940, C – compiled from figs. 10 and 14; D – fig. 5, cf. with Fig. 2A).