Working with previously-uncataloged manuscripts from HMML’s Ethiopian Manuscript Microfilm Library, Erho has identified the second oldest Ethiopic manuscript in existence (the oldest is the famous Abba Garima Gospels), which also contains the oldest known copies of books from the Old Testament. This manuscript, EMML 6977, dates prior to the Solomonic Era in Ethiopia, which began in 1270 CE and contains the books of Job and Daniel, as well as two homilies.
He also identified the oldest known major Ge'ez codex of the Old Testament (EMML 9001), which contains the entire Book of Jubilees, considered to be a canonical book by the Ethiopian Orthodox Church. Its presence in this manuscript is now the oldest known copy of the Book of Jubilees.
Finally, Mr. Erho is cataloging the biblical manuscripts from Gunda Gunde in northern Ethiopia, numbering more than fifty of the 220 manuscripts in the Gunda Gunde collection photographed in 2006 by Michael Gervers and Ewa Balicka-Witakowska in an expedition sponsored by HMML. All but one of the Old Testament manuscripts at Gunda Gunde are from the sixteenth century or before, exceptionally early for Ethiopian manuscripts.