gna' dpe'i rnam bshad [2013] (pp. 138-147, 205)
the ཚད་མ་རིགས་གཏེར་རང་འགྲེལ ཧོར་པར-edition carved in the wood-male-monkey year of 1284 under the patronage of the empress Chabi and her daughter-in-law Kökejin and is the oldest known Mongol xylograph of a Tibetan text Van der Kuijp 1993 (p. 281)
Dan Martin's Tibeto-logic blog features three posts on early woodblock printing (accessed: 2023-06-17)
"Kālacakra Tantra, the First of Two Rare and Early Woodblocks, November 03, 2021":https://tibeto-logic.blogspot.com/2021/11/kalacakra-tantra-first-of-two-rare-and.html
"Kālacakra Tantra, the Second of Two Rare and Early Woodblocks, November 11, 2021":https://tibeto-logic.blogspot.com/2021/11/kalacakra-tantra-second-of-two-rare-and.html
"Kālacakra Tantra Woodblock Prints: A Guestblog in Response, November 30, 2021":https://tibeto-logic.blogspot.com/search/label/woodblock%20printing