Create a free timeline diagram showcasing a brief history of CPR Certification. In the early 1700s, the Paris Academy of Science officially recommended mouth-to-mouth resuscitation for drowned victims. In the 1800s, Germany started chest compression practices on humans, and in 1891, Dr. Maass performed the first documented chest compression on humans. Around a century later, Dr. George Crile reported the first successful use of chest compressions on humans. In 1904, he performed the first American case of closed-chest cardiac massage. The below timeline diagram shows that in 1954, James Elam proved that expired breath was sufficient to maintain adequate oxygenation, and two years later, in 1956, he and Peter Safar invented mouth-to-mouth resuscitation. Instead of using complex software that requires you to pay a hefty sum, you can use the free timeline maker EdrawMax that provides you 100% customizable free templates. After your editing, you can share these timeline diagrams in PNG, JPG, or PDG, or any other format deemed required from your side. Timelines are often used in history textbooks and biographies -- they explain what happened during a certain period of time or to a particular person, starting with the earliest event and moving forward through time.