This two-volume edition is the first to present the translations of Calderón's autos sacramentales published by Eichendorff in 1846 and 1853 in a version based on a text-critical review of the material. The first edition was marred at various points by printer's errors, which have now been emended via comparison with Eichendorff's source, the authoritative Apontes edition of Calderón's works. The commentaries situate the allegorical dramas on the Eucharistic mystery in their literary-historical context, cast light on theological and poetological issues, and prepare the reader for an appreciation of the plays. Comparison with literal translations of significant passages points up Eichendorff's romanticizing approach.