Pentekostarion (Tsvetnaya Triod) – a book similar to the Triodion but containing the Proper of the Season, that is, the variable prayers and lessons for the services from Easter Sunday until the first Sunday after Pentecost (All Saints' Sunday). If allowance is made for borrowing and additions, it was largely the work of St. Theodore the Studite (d. 826) and St. Joseph of Thessalonica or their disciples. (Day, Peter. The Liturgical Dictionary of Eastern Christianity. Wellwood, 1993. P. 16, 231) The book forms part of the collection of old prints and special collections of UCU Library. The title and place of publication are identified by the cataloger on the basis "Zapasko, I͡A., Isai͡evych, I͡A. Pami͡atky knyz͡hkovoho mystet͡stva : kataloh starodrukiv, vydanykh na Ukraїni. – L'viv: Vyshcha Shkola, 1984, Vol. 2, pt. 1 : (1701-1764). – P. 79". The book lacks the title page, cover, and some unnumbered pages at the beginning and end of the book. The book is restored. The book contains marginal notes in black ink. The printing is in red and black ink. Zapasko I͡A., Isai͡evych I͡A. Pami͡atky knyz͡hkovoho mystet͡stva : kataloh starodrukiv, vydanykh na Ukraїni. – Lʹviv : Vyshcha Shkola, 1984, Vol. 2, pt. 1 : (1701-1764). – P. 79. – № 1593. 2°. [1], 496 p. Lines – 29, 40. Layout: printed in 2 colors. Script: 10 lines – 86, 62 mm. Decoration: fortas, Christ, and an angel with the cup ("prayer for the cup," verso of title, copperplate), 22 illustrations in the text from 22 boards, plates with scenes, tailpieces, and initials. Molded decorations. Engravers: d: w: (thus signed on the copperplate on the back of the title page), Feofan K., Hryhoriĭ, G., Heorhiĭ, O. K., Hr.