I suggest Amity Shlaes's Coolidge for further reading.
10 Reasons to Love 'Silent Cal'
10. He was a small government conservative, which is probably why he doesn’t get a lot of attention from historians, who lean overwhelmingly to the left of the political spectrum....
9. Fought against racism. Silent Cal spoke out often against the chronic racism of the South and its party, the Democrats....
8. A true constitutional federalist. Coolidge’s anti-lynching stance is all the more remarkable because he was, by and large, a man who sought to keep the federal government limited....
7. Coolidge was quiet, and quite against Washington social life....
6. Foreign policy. Republicans were elected back into the presidency after Woodrow Wilson’s disastrous campaign to make the republic into a world power. Part of the Republican platform called for the U.S. to stay out of the newly created League of Nations, and Coolidge did just that....
5. Native Americans. Coolidge and other Republicans were not content with fighting anti-black racism and anti-Semitism....
4. A team player. Coolidge did not like Herbert Hoover, but he refrained from publicly criticizing him. In an age where loyalty and cooperation are viewed as weaknesses, especially in the realm of politics, Coolidge’s team mentality was refreshing. ...
3. Stepped down after one term. Unlike Franklin Roosevelt, who continued to seek the power of the presidency long after its burdens affected his health, Coolidge chose to look after himself and his family after his first full term in office, and refused to seek a second term....
2. Immigration. At odds with the rest of his anti-racist administration, Coolidge’s immigration policy was his weakest link....
1. Debt. Under the Coolidge administration, the federal debt was significantly reduced (by about one-quarter), even though the Republicans inherited a $22.3 billion deficit from the disaster that was World War I....