Along o' my old brown mule by Answers to Your Mule Questions by 
Asses, Mules and Other Equine Hybrids by The care of the horse and mule, and how the harness should fit / compiled and illustrated by R.J. Day for the guidance of officers in training, for transport officers and horsemanship by Donkey/Mule Seminar : July 24 & 25, 2010 / the Office of Veterinary Continuing Education, College of Veterinary Medicine & Biomedical Sciences, Texas A & M University, College Station, Texas.Donkeys, mules and horses in tropical agricultural development : proceedings of a colloquium organised by the Edinburgh School of Agriculture and the Centre for Tropical Veterinary Medicine of the University of Edinburgh and held in Edinburgh, Scotland, 3Harnessing and hitching donkeys, mules and horses for work by History of American jacks and mules (recollections) by 
Horses and Mules in the Civil War by Jack Stock and Mules in Missouri by Let's show your mule : a mule photo album, 1993 by The Missouri Mule by The mule : a historic hybrid by Mules across the great wide open : a true western adventure by The mule alternative : the saddle mule in the American West by The mule companion : a guide to understanding the mule by The mule industry of Missouri remembered : a key to transcripts from 130 interviews contained in volumes one through eight of Recollections of Missouri mules by 
Mule South to Tractor South by Mules in court : the mystique persists by Mules : Missouri's long eared miners by 
Mules, mules and more mules by The mules' last bray : World War II and U.S. Forest Service reminiscences by 
The natural superiority of mules by 
The old campaigners : commemorating the role of waler horse, camels, mules, and donkeys used by the Australians and New Zealanders at war. by Photo records of the Guyton & Harrington Mule Company propertiesRecollections of Missouri mules by 
Shavetails and bell sharps : the history of the U.S. Army mule by That son of a gun had sense : mule stories from the Bootheel area during the 1930's-1940's era by Yosemite : where the mules wear diamonds by 
