Here is a shamefully small list of the large number of sources that are available on the net:

Here is a site listing work by S. J. Reynolds et al.

The Arizona Geologic Survey (an effective organization staffed with competent people) has a list of maps.

Here is a compilation of information by V. L. Rystrom.

Here are photos by someone more educated and more knowledgeable than I.

This summarizes the current theories on MCC evolution.

This is a good page with illustrations