At http://bibframe.org/demos/ there is a link said to be "A collection
of Library of Congress MARC records representing the diversity of
resources found at the Library".
Closer examination of the sample shows that all the resources appear to
be physical resources. Examination of the Library of Congress website
suggests if also holds a range of digital resources.
Could http://bibframe.org/demos/ please be updated to either remove the
diversity claim or (preferably) with a more diverse sample. Ideally the
more diverse sample would include (a) a digitised resource with a
parallel physical resource (b) a born digital resource (c) a digital
resource in a format with no equivalent physical format (an RDF data
file; a global climate model dataset; etc).
If the Library of Congress doesn't generate MARC for such resources, I'm
sure that members of the list can locate or generate suitable exemplars.
Library Technology Services http://www.victoria.ac.nz/library/