Final answer:
The provided references do not include the specific opening date for William Beaumont General Hospital, but they offer historical context regarding medical practices and conditions.
Step-by-step explanation:
The date that William Beaumont General Hospital opened is not directly provided in the reference information. However, the references mention historical contexts such as the Canadian General Hospital during World War I and specifically an entry dating from December 2, 1917, discussing medical activities around the battle of Cambrai. While this does not directly answer the question about William Beaumont General Hospital's opening, it provides insights into war-time medical conditions and the challenges faced by medical personnel. Another reference mentions the admission of a patient to Bicêtre Hospital in 1840. Various other references provide context about healthcare practices during the 19th and 20th centuries, like the 'National Negro Health Week' and the impact of the Hill-Burton Act.
To provide an accurate answer regarding William Beaumont General Hospital's opening, one would have to conduct further research beyond the provided references. The information given is valuable for understanding historical medical practices but does not contain a specific date for the hospital's inception.