legislation_cosponsors: 97-sconres-59, W000502

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-sconres-59	W000502	Sen. Williams, Harrison A., Jr. [D-NJ]	D	NJ	1982-01-28	1