You would get good use out of a Colorchecker Passport, getting accurate skin tones is going to be tough.
And if you are wondering who cares, every historian or citizen who wants first hand visual access to situations few are privileged to witness. It is journalism of the most intimate degree.
You may not know the photographers but you would surely know the photographs of Presidents from JFK forward. (JFK was the first President to use a personal photographer) If the photographs rise to the level of "art" (fill in your own definition) so much the better.
In a final letter From President Gerald Ford to David Hume Kennerly , You say 'It's been real.' and from working so closely with you it's not only been real, it's been fun. In addition to being the world's best photographer, you have an uncanny ability to put people at ease, to bring out their best. Thanks largely to you and your determined effort to see people as what they are--people--the Ford White House will not go down in history as 'stuffy.' You photographed history being made, and you helped make it lively as it was happening. Your spirit will prevail in your photographs for years to come and I know that whenever we view them we'll remember the event, and we'll remember the spirit!
After President Obama I think Pete Sousa was the hardest working person in Washington.
Jim