Purim.

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Akeidat Yitzchak al HaMegillot & Chazut Kasha (R' Yitzchak Arama)

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Ayelet Ahevim - Biur Kavanot HaMoadim

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BaYam Darkecha - Chanukah / Shovavim / Tu B'Shvat / Purim

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Be'er HaChaim : Yemei Ha-Purim (Rabbi Elimelech Biderman)

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Ben Ish Chai - Ishe Re'ach (Derashot L'Arbaa Shabbatot)

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Ben Ish Chai - Keren Yeshua HaShalem al Megillat Esther

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Bilevavi Mishkan Evneh - PURIM

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Birkat Moadecha : Chanukah & Purim

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B'Maaglot HaShanah : Rabbi Baruch Shalom HaLevi Ashlag (2 vol.)

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Bnei Yisaschar Hamevuar: Shevat & Adar (Rabbi Tzvi Elimelech of Dinov)

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B'Ohr HaChaim - Rabbi Chaim Aryeh Erlanger

Chashukei Chemed al Masechet Megillah

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Chavatzelet HaSharon : Purim & Daled Parshiyot (2 vol.)

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Chazon Ovadia - Purim (Rav Ovadia Yosef)

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Chotam HaMelech : Chatam Sofer al Megillat Esther, Adar & Purim

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Derashot HaMaggid Rabbi Shabtai Yudelevich : Purim & Pesach

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Derech Yeshara - Hanhagot R' Sraya Deblitzky (Daled Parshiyot, Adar, Purim)

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Divrei Yoel al Moadim - Rabbi Yoel Teitelbaum (volume #6)

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Doresh Tov HaMevuar : Rabbi Yaakov Abuchatzeira

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Eshkol HaKofer HaMevuar al Megillat Esther (Rabbi Avraham Saba)

Gevurat Yitzchak al Moadim - Chanukah & Purim

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Haggadah - Lev Sameach (Alesker Rebbe)

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Ha'Lekach ve'Halibuv : Chodesh Adar

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Halichot Shlomo - R' Shlomo Zalman Auerbach (Tishrei - Adar)

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Hallila de'Mordechai - Sippur Ness Purim

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HaMoadim ba'Halacha - Rabbi Shlomo Yosef Zevin (2 vol.)

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Hegyonei Halacha al HaMoadim : Rabbi Yitzchak Mirsky (3 vol.)

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Hilchot Charbo Darbo (Rabbi Mordechai Tzvi HaLevi Tzion)

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Kedushat HaZmanim : Otzrot Yaakov (Rabbi Yaakov Avichatzirah)

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Ke'Motze Shalal Rav - Purim