 Venegas' 600-page manuscript, "Empresas Apostólicas," was completed in 1739.It was sent to Spain, but it languished there rather than seeing publication because it was too detailed with regard to military matters.Another Jesuit historian, Andrés Marcos Burriel, extensively revised Venegas' manuscript in the 1750s, and it was finally published in 1757 as "Noticia de la California" in three volumes at Madrid.