Roger Tory Peterson (Wikipedia)

This source backs 17 claims across the atlas. As facts: 12 well-attested. As cited relationships: 2 holds. Plus 3 entities citing it as a general reference with no single fact or relationship attached.

Disposition By Topic

• Figures, 8 claims: 5 well-attested, 1 holds, 2 general references.
• Milestones, 6 claims: 4 well-attested, 1 holds, 1 general references.
• Sources, 3 claims: 3 well-attested.