Career
A year later, in 1870 he traveled to Lipsk to learn book printing at Baer and Hermann Publishing. He returned to Poznań in 1873 and opened his own book printing company using his father"s inheritance. Leitgeber"s most successful periodical was Kalendarz Poznański published continuously from 1873 till 1901 and replaced with the new Nowy Kalendarz Poznanski published for the next 30 years.
Jarosław Leitgeber wrote books, especially historical for teenangers, under the alias "January Tworzymir".
Leitgeber made his living as the bookseller from 1866 till the end of his life and owned a bookstore in Poznań by his own name. From 1876 to 1903 he ran a printing house.
Since 1873 he was publishing Kalendarz Poznański. From 1910-1918 he was a chairman of Association of Polish Booksellers in Germany (Związek Księgarzy Polskich na Rzeszę Niemiecką).
