legislation_cosponsors: 99-hres-37, G000400

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-hres-37	G000400	Rep. Gray, Kenneth J. [D-IL-22]	D	IL	1985-02-06	1