From Eric: Prospero 1.26 [1] is out. New features include "conversion of a single page number, or a range of page numbers, from an Ariel document into individual PDFs, for removing the invoice that sometimes comes with an Ariel document or when several documents come in a single Ariel transmission. [Prospero also] now allows import from a monochrome PDF/TIFFs uncompressed or compressed using a CCITT Group3/4 Fax compression scheme."
Links:
[1] http://bones.med.ohio-state.edu/prospero