880-02 Manṣūrī, Maḥmūd al-Imām, former owner. DLC Mansuri Collection (Library of Congress) DLC manuscripttext ara Poem with additonal poems on the risings of stars, the calendar and the comparison between Coptic and Greek calendars. Manuscript. Title from fol. 1a. Scribe not identified. Place of writing not identified; possibly Egypt. Paper; heavy, unpolished medium cream color laid paper with horizontal chain lines and watermark of three crescent moons in a row in descending order of size; black ink with rubrication; catchwords. Naskh; 23 lines in written area 16 x 8.5 cm. Fol. 1b-4b. "85. IX 821 = 5.776." Library of Congress. Mansuri Collection, 5-776. Binding; black quarter leather with black grain sides; former owner's name in lower right corner of cover. Fol. 1b-3a. Urjūzah fī ṣifat al-manāzil wa-asmāʼihā wa-awqāt ṭulūʻihā fī al-ʻunṣur -- fol. 3a-3b. Tasmīyat shahr al-Qibṭ -- fol. 3b-4a. Madkhal shuhūr al-Rūm fī al-Qibṭ -- fol. 4a-4b. Poem on the confusion between al-ḍād and al-ẓāʼ. Purchase of Mahmud al-Mansuri collection, 1945. Calendar--Early works to 1800. Months--Early works to 1800. Arabic language--Phonetics--Early works to 1800. Ḍād (The Arabic letter)--Early works to 1800. Ẓāʼ (The Arabic letter)--Early works to 1800. Manuscripts, Arabic--Washington (D.C.) https://hdl.loc.gov/loc.amed/amedarabicmss.2016503185