A collection of the monthly climatological reports of the states, originally issued separately for each state or section. Similar data was combined in the Monthly weather review for July 1909 to Dec. 1913, also pub. separately during that time for each of the 12 districts. Previous to July 1909 monthly reports were issued for each state or section.

"The temperature data contained in the report on temperatures and vapor tensions of the United States, reduced to a homogenous system, gave the values for each month of the year and generally for the period 1873 to 1903"--Page 3.