In 1983, 1985 he lectured in Curitiba in the fields of adjustment and statistics and in 1985, 1986, 1987 he conducted various lectures in Wuhan, Haifa, and Calgary in adjustment and statistics.
Koch wrote a book containing 493 old-world symbols, monograms and runes entitled The Book of Signs (reprinted in 1955, in the Dover Pictorial Archive Series).
Rudolf Nureyev | Rudolf Steiner | Ed Koch | Rudolf Virchow | Rudolf Hess | Rudolf II, Holy Roman Emperor | Robert Koch | Rudolf Kempe | Rudolf Hilferding | Rudolf | Heckler & Koch MP5 | Rudolf Schwarz | Rudolf Haag | Rudolf, Crown Prince of Austria | Howard W. Koch | Rudolf Schwarz (conductor) | Rudolf Platte | Rudolf Nebel | Rudolf Carnap | Robert Koch Institute | Koch Entertainment | Koch | Howard Koch | Beate Koch | Rudolf Thurneysen | Rudolf Stingel | Rudolf Serkin | Rudolf II | Rudolf Bultmann | Rudolf Baumgartner |
Famous type designers like Rudolf Koch, Walter Tiemann and Otto Eckmann worked for this foundry and created well known typefaces like Koch Antiqua, Wilhelm Klingspor, Tiemann Antiqua, Eckmann.