This biography provides a detailed account of the life and work of Alexander Donaldson, a prominent Presbyterian minister and educator in Pennsylvania in the mid-19th century. The author describes Donaldson's upbringing, education, and religious training, as well as his contributions to the establishment and growth of Presbyterian churches and schools. Sloan's writing is insightful and engaging, offering a fascinating glimpse into the life of a key figure in the history of American Presbyterianism. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.