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Hi,

Alfonso El Sabio.
LIBRO DE LAS CRUZES. EDICION DE LLOYD A. KASTEN Y LAWRENCE B. KIDDLE. 1961, Madrid, 4to, ppxlviii + 171, pages uncut, black and white illustrations, printed wrappers.

I don't know if it's a translation or simply a critical edition.

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There is also an article:

El Libro de Las Cruces


Author: Jos? A. S?nchez P?rez
Source: Isis, Vol. 14, No. 1, (May, 1930), pp. 77-132

PS: If you need this article let me know.