Signed in ink by Jan Kotěra, stamped with red and green ARCH. J. KOTERA, paper stamps, sign. Josef Jelinek, builder, builder E. Kratochvíl, Bohemia, design and construction of plans by arch. J. Kotěra, dated 27th November 1908, design of a family house for Mr. E. Kratochvíl, director of the ironworks in Černošice, 152/1, paper, ink, colored, 11 pcs: 4 pieces sealed with canvas, stamped and with the approval of the building commission in 1909