Wikipedia:
United States Congressional Delegations from Rhode Island
These are tables of congressional delegations from Rhode Island to the United States Senate and United States House of Representatives.
United States Senate
House of Representatives
1790 - 1843: At-large seat(s)
When Rhode Island entered the Union in 1790. It had one seat. After the first census, it had two seats, chosen at-large on a general ticket.
1843 - present
In 1843 the at-large seat was eliminated. Since then, Representatives have been chosen from geographicly-distinct districts.