Sefer HaMaamarim - Friediker Rebbe
This is a series of books (approximately 20 volumes) containing the maamarim delivered by the Friediker Rebbe during his years of leadership.
Sefer HaMaamarim 1922-1923 edit
Seven maamarim were printed in a book published in 1986, and six years later the Rebbe distributed "Kuntres Maamarim 1922" containing three additional maamarim from that year.
Sefer HaMaamarim 1928 edit
Contains a large portion of the maamarim that the Friediker Rebbe delivered (or wrote) in 1928. In Cheshvan 1928, the Friediker Rebbe moved to Riga, Latvia, and therefore most of the maamarim from this year were delivered in Latvia, with a minority in Russia or Warsaw (during a visit that occurred that year). Some of the maamarim did not reach Kehot and therefore were not printed in the book.
In addition to the maamarim, the book also includes portions of sichos and letters, brief overviews, and various descriptions of events that occurred with the Friediker Rebbe that year. The book was edited by Otzar HaChassidim and was first published by Kehot in 1975, and in 1980 by the Kehot branch in Kfar Chabad. The third edition (together with Sefer HaMaamarim 1927) was printed by Kehot in 1986 at "Ezra Press" by Rabbi Mordechai Shusterman.
Sefer HaMaamarim 1934-1935 edit
Was first published before 22 Shevat 2022 by Otzar HaChassidim, followed by 'Kuntres Maamarim - 1934' - containing seven maamarim printed for the first time from the original manuscript.
Sefer HaMaamarim - Yiddish edit
The Sefer HaMaamarim - Yiddish includes maamarim that were printed between 1941-1945 in Yiddish in the 'Yilmidenu Rabbeinu' section of Hakriah V'hakedushah monthly journal. The book contains fifty-three maamarim. The maamarim were intended for the Jewish public in America whose primary language was Yiddish. The translation teams of Kehot and Hakriah V'hakedushah were responsible for translating the maamarim, under the leadership of the Rebbe. The chief translator was journalist Aaron Levitt-Hirsch, known as "Y. Segal".
This book was the first of the Friediker Rebbe's Sefer HaMaamarim to be published, and the Rebbe himself made notes in it before printing.
Sefer HaMaamarim - Kuntreisim edit
The 'Sefer HaMaamarim Kuntreisim' series includes three parts, which collected the maamarim published in kuntreisim by the Friediker Rebbe (since leaving Russia) between 1928-1948 - parts 1 and 2, and part 3 - in 1952-53, and several additional individual kuntreisim. The kuntreisim were generally printed in their original format, and were accompanied by additions that were included in the original publication, including collected customs and segments of sichos by the Friediker Rebbe, which were edited by the Rebbe, and were later collected with many additions in Sefer HaMinhagim.
From the books, the Friediker Rebbe's sichos that had already been printed in the Likkutei Dibburim series were omitted, and for this reason, kuntreisim that contained only sichos were not printed in this series.
The series began publication in 1962, the second volume was also published in 1962, and the third volume was published in 1977. Over the years, additional editions were printed (by the Kehot branch in Kfar Chabad in 1973, 1976, 1979, and 1986). In 2020, the entire series was printed in a new and corrected edition by Otzar HaChassidim.
The maamarim published in 1948-1951 were collected into books named after them, since in those years there were [almost] no maamarim. Of these, only Sefer HaMaamarim 1951 was called "Collected" - despite all the maamarim printed in previous years being collected from maamarim delivered many years earlier - apparently to distinguish it from the Rebbe's.