J.H. Eilmann (1840- 1916), H.D. Eilmann (1843- 1883) and J. Coenraad (1886-1945) The brothers Johan Herman and Herman Diderich Eilmann were not only building contractors, but also the designers of a varied body of work. The residence for Cornelis Kamphuijs on the Westzijde in Zaandam was designed in 1883 in neo-Renaissance style with classicist elements. Kamphuijs, owner of a steam-cell factory on the Zaan and rich thanks to the flourishing industry, acquired the appropriate allure with this house. The Anna Paulowna Masonic Lodge (1883) and the later janitor's house (1885) on the Stationsstraat in Zaandam are also by their hand. Of particular note is P.J. Out's Book and Commercial Printing Office on Zaagselpad in Zaandam (1896), built entirely of wood. It is built in English landscape style with a Tudor arch in the front facade, while the staggered window bars betray the influence of Berlage. The design of the storefront of Keg, trading in colonial goods, on the Dam in Zaandam (1909) is also credited to J. and D. Eilmann. D. Eilmann (1843-1883) is no longer alive at that time, J. Eilmann (1840-1916) is of advanced age. The storefront, later the café "Het wapen van Friesland," has been declared a municipal monument just like the previously mentioned properties. Little work is known of Jacob Coenraad (1886-1945), associate of the Eilmann brothers. Coenraad attended the 'Industrieschool van de Maatschappij voor den Werkenden Stand' from 1903 to 1906, and continued his education at the Hoger Bouwkunst Onderricht in Amsterdam. After graduating in 1911, he joined the construction firm of J. & D. Eilmann in Zaandam as an architect. He designed the essence and flavorings factory of Polak and Schwarz (1930) in Zaandam, the only large Jewish company in the area. Located in the Zaan region, surrounded by many factory buildings in neo-styles, his design in the style of New Objectivity demonstrates daring. The complex is made of reinforced concrete with a supporting structure of mushroom columns. The concrete facades are interrupted by large steel windows and sets of windows. Polak & Schwarz grows into one of the most important suppliers of flavorings on the world market and, due to lack of expansion possibilities, moves to Hilversum in the 1960s. In 2001 the building, which had stood empty for a long time, was declared a national monument and was converted by the architectural firm Zijlstra Schipper into the luxurious apartment complex "Maison d'Essence". The architectural firm received the renovation award for this in 2003. Little else is known about J.H. Eilmann, H.D. Eilmann and J. Coenraad. The archive, which is held by the NAI, includes construction drawings, specifications and correspondence, training drawings, school notebooks and photographs from the period 1910-1930. Note: the oeuvre of J.H. Eilmann has not been (fully) inventoried.