![Muhlenberg College on Twitter: "The elusive squad of sack people descended upon campus today! As quickly as they appear, they disappear even faster! Happy Sack Day, Mules — if you know, you Muhlenberg College on Twitter: "The elusive squad of sack people descended upon campus today! As quickly as they appear, they disappear even faster! Happy Sack Day, Mules — if you know, you](https://pbs.twimg.com/media/FGMAjchXwAgNIKw.jpg:large)
Muhlenberg College on Twitter: "The elusive squad of sack people descended upon campus today! As quickly as they appear, they disappear even faster! Happy Sack Day, Mules — if you know, you
![Workers walk a group of mules loaded with coffee sacks from a... Fotografía de noticias - Getty Images Workers walk a group of mules loaded with coffee sacks from a... Fotografía de noticias - Getty Images](https://media.gettyimages.com/id/868563066/es/foto/workers-walk-a-group-of-mules-loaded-with-coffee-sacks-from-a-plantation-to-ciudad-bolivar.jpg?s=1024x1024&w=gi&k=20&c=3wiwX9pMaSUVtLa8rO6np8rxL_j6aqi4HT721hSc_Y8=)
Workers walk a group of mules loaded with coffee sacks from a... Fotografía de noticias - Getty Images
![2,000 Mules: They Thought We'd Never Find Out. They Were Wrong.: D'Souza, Dinesh: 9781684514465: Amazon.com: Books 2,000 Mules: They Thought We'd Never Find Out. They Were Wrong.: D'Souza, Dinesh: 9781684514465: Amazon.com: Books](https://m.media-amazon.com/images/S/aplus-media-library-service-media/f9c534a2-5328-45d0-8a31-68559e71ce24.__CR0,0,970,600_PT0_SX970_V1___.jpg)
2,000 Mules: They Thought We'd Never Find Out. They Were Wrong.: D'Souza, Dinesh: 9781684514465: Amazon.com: Books
![Man Carrying Sacks with a Mule in Nuodeng Village, Yunnan, China. Editorial Photography - Image of bags, peasant: 179919267 Man Carrying Sacks with a Mule in Nuodeng Village, Yunnan, China. Editorial Photography - Image of bags, peasant: 179919267](https://thumbs.dreamstime.com/z/man-carrying-sacks-mule-nuodeng-village-yunnan-china-179919267.jpg)