The Bibliotheca Hagiographica Graeca is a catalogue of Greek hagiographic materials, including ancient literary works on the saints' lives, the translations of their relics, and their miracles, arranged alphabetically by saint. It is usually abbreviated as BHG in scholarly literature. The listings include MSS, incipits, and printed editions. The first two editions (1895, 1909) were edited by the Bollandists, which included the Jesuit scholar Hippolyte Delehaye. The most recent editions have been the product of a single editor François Halkin. The BHG along with the Bibliotheca Hagiographica Latina and Bibliotheca Hagiographica Orientalis are the most useful tools in the research of literary documents concerning the saints.