An archive for micrometeorological and tracer dispersion data has been developed by Battelle, Pacific Northwest Laboratories for the U.S. Environmental Protection Agency. The archive is designed to make the results of extensive field tests readily accessible to EPA for model testing, development, and verification efforts. The report provides documentation for one of the archived data sets, The Minnesota 1973 Boundary Layer Experiment. The aim of the effort is to archive invaluable data sets in a timely fashion before the necessary supporting information about the data becomes lost forever. The entries in the documentation report are as follows: data set fact summary, a narrative description of experiment and data, special information, references, a description of archive data files, contacts (names, addresses, and phone numbers) and standard experiment summary table. Revision 2 includes previously unpublished rawinsonde profile data.