The US Bureau of the Census published detailed statistics on imports and exports prior to the advent of computerized databases. The titles change over time but the series are shelved in Regenstein B-level bookstacks in the general call number range of HF 105.C95
The Guide to Trade Statistics, call number HF105.A625, can help identify titles, but it was first published in 1967.
Commercial Relations of the United States with Foreign Countries
Covers 1855-1912
In print in Regenstein Bookstacks, call number HF 105.B3. Yearly editions are in HathiTrust and ProQuest Congressional and are linked from the Library Catalog
League of Nations Publications
United Nations Publications