This is as good of a book as you can find about "His Accidency", President John Tyler, and I thoroughly enjoyed it. Gary May's book is very readable, short (151 pages, similar to the books in this series), and there is a lot to absorb about this often forgotten president.
I agree with most historians that Tyler was one of the US' worst presidents of all-time. He was also disliked during his time. A native Virginian from the slaveholding plantation class, he was an eloquent, Southern good ol' boy who lionized the previous Virginian presidents and held very conservative values. He was honest most of the time and cared deeply about the country, but in the end, his values and decisions reflect poorly. As a central point, Tyler was pro-slavery, and he did not change with the times. His obsession was the annexation of Texas, and after a long fight at the tail end of his presidency, the state was added as a new slave state, thus expanding the institution of slavery (recall that Texas defeated Mexico in a war for independence and for 9 years was their own country despite continually asking to becoming a US state). Tyler had many enemies, and it was fun to read some very eloquent criticisms of him from the likes of John Quincy Adams and Henry Clay. Leaving the presidency at only 52, Tyler would live to see the Civil War break out. To his credit, he valiantly went to Washington and presided over a last-minute committee to try and stop the war. After the committee's failure, John Tyler, an ex-US President, amazingly sided with the Confederacy and became a politician in their new government. He firmly believed that an expansion of slavery was necessary (if not in the Western US territories than even in Mexico or the Caribbean), because he feared a race war would develop if too many black slaves overwhelmed the white population. He thought slavery would gradually and peacefully die out if it were more spread out. It doesn't hold up well, does it? It is hard to forgive Tyler for anything after he sided with the CSA.
Beyond the main political issues, there are a lot of fantastic side stories. Tyler, as a vice president, was the first VP to take over the presidency when William Henry Harrison died only 30 days into the job. Disagreeing with the cabinet, the entire cabinet resigned (except one - Webster), and Tyler quickly became isolated as both major political parties couldn't stand him. Tyler's tragically ill wife died early in the presidency, and after a period of mourning, Tyler married a gorgeous 24-year old, Julia Gardiner, who was 30 years his junior. Against high odds, they had a very happy marriage and Tyler, born in 1790, would produce many more children, bring the total up to 15 (the most of any president). One of his kids died in 1947, and he still has a grandson who lives!). Finally, there was a horrific cannonball firing exhibition accident (USS Princeton ship) that killed his future wife's father, the Secretary of State, and many others.
Not a good president, but a man of the times and a lot to learn about US history in this one!