Hello lablackey,
I agree with Borek's comments, most standardized tables are in the CRC handbook or other common references that are in the university library.
There are many proprietary tables in the oilfield, and most are generated by suppliers of the material. If you want to be sure of the data with an unreferenced chart, you can perform the tests to validate the information. Usually, this is the best method, as most standardized charts are composed of >99% material. This is not common in the oilfield, but may be common in the pharmaceutical industry where reactions are very sensitive to contamination.
These are just a few thoughts.
Sincerely,
Eugene