legislation_cosponsors: 99-hr-4567, E000064

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
99-hr-4567	E000064	Rep. Edwards, Don [D-CA-10]	D	CA	1986-04-10	1