Obchodní tiskárny Kolín is a company with long tradition. The company was founded by the Prague typographer J. L. Bayer in 1879. It was originally a lithographic printing office printing wall calendars and colour-print pictures with chromolithography method. The first wall calendar was printed in 1884.
Later, with the production of calendar blocks, the company established the departments of letterpress, offset printing, lithography and high-capacity bookbindery designed to produce business books. The enterprise soon became the largest domestic manufacturer of calendars.