"Kirstin Kennedy's book is a good addition [to new titles on Alfonso and his work]. It is an elegantly written contribution to one specific question in the Alfonsine era: to what extent did the king himself intervene in the production of his works? Kirstin Kennedy offers a multifaceted response to this question by examining the manuscripts that, containing Alfonsine works, can also be dated to Alfonso's lifetime."
- Jesús R. Velasco, The Medieval Review, 21.09.20 (2021)
"Kennedy’s erudite book makes an important contribution for scholars interested in Alfonsine manuscripts and identifies, in a systematic and convincing way, the weaknesses of existing scholarship."
- Heather Bamford, George Washington University, Speculum 96/3 (July 2021)