The term 'Lake Beside Buffalo' is referring to Lake Erie, which is the fourth largest of the five Great Lakes in North America. It is located on the international border between Canada and the United States, with the majority of the lake lying within the U.S. state of Pennsylvania. The lake is connected to the Atlantic Ocean by the Niagara River and is the source of drinking water for millions of people. It is also a popular destination for recreational activities such as fishing, boating, and swimming.