a. A paper discussing cross-platform font problems for LC stacks
https://www.dropbox.com/s/y4biemi64iysc40/Cross-platform%20text%20appearance.pdf?dl=0
b. The database
https://www.dropbox.com/s/qexjqnce6ept6y4/nsFontmetricsDatabase.sqlite?dl=0
c. A stack to assist in extracting data from the database, particularly if you are not sqlite-savvy
https://www.dropbox.com/s/yjtv77u8sh95z5d/nsFontMetricsBrowser.livecode?dl=0