Petr Ginz’s diaries and other texts have been copied without changes as closely as possible, while adhering to orthographic rules of the time. The diary headings have been given a unified form, according to the one used most frequently by Petr in his diaries: the days as Arabic numerals, the months as Roman numerals, followed by the year and in brackets the day of the week. Inconsistencies have been corrected during the copying of the entries. To facilitate the understanding of the text some details referred to as numerals have been rewritten as words, e.g., 4 children—four children. We also detail irregular abbreviations. A small number of grammatical and spelling errors have been corrected. In a few exceptional cases the syntax has also been corrected. Words that have been added are placed in square brackets.