legislation_cosponsors: 97-hres-374, M000264

Cosponsors for tracked legislation. Distinguishes original cosponsors (signed on at introduction) from later additions. Linked to congress_members via bioguide_id.

This data as json

bill_id	bioguide_id	full_name	party	state	sponsorship_date	is_original_cosponsor
97-hres-374	M000264	Rep. Mavroules, Nicholas [D-MA-6]	D	MA	1982-03-09	1