Final answer:
The information provided does not directly answer who was the very first president in PSU's history. If 'PSU' refers to Portland State University, the answer would need to be found from PSU archives. If referring to the first U.S. president, it was George Washington.
Step-by-step explanation:
The very first president in PSU's history is not directly mentioned in the provided information. However, if PSU stands for Portland State University, then the first president would be specific to that institution, and one would need to refer to the university's archives or official history to find that answer. It should be noted that the materials given discuss various presidents, including the first president of Clark University and George Washington, who was the first president of the United States. If the question refers to the first president of the United States, George Washington was unanimously elected and is a figure of significant historical importance, known for his roles in the Revolutionary War, the Constitutional Convention, and as the first head of state of the new nation.