100 years Zion Mule Corps - postage stamp with attached tab, mint never hinged, Israel | Stamps mint | Israel | Overseas | Postage stamps | Stamps Sieger
Mule Foot Leather Stamp | Hobby Lobby | 2081040
Mexico's 'Little Mules' have carried stamp collectors a long way
55 Postal Mule Images, Stock Photos & Vectors | Shutterstock