What past presidents thought of each other

[A18]

I've been interested recently in what past presidents thought of each other.

For example, Thomas Jefferson and John Adams. Andrew Jackson and John Q. Adams. Ronald Reagan and Calvin Coolidge.

Of course, in the last case, obviously it would just be what Reagan thought of Coolidge, but their presidencies are similar. I've listened to some of Reagan's old radio programs, and he mentioned Calvin Coolidge and Dwight Eisenhower favorably, talking about unemployment specifically, and some other economic factors.

Is there a place where I can get all this information?

[A18]

What was each president's favorite president?

[A18]

GWB => Google says Theodore Roosevelt
GHWB => No sign of it in Google
Clinton => Google search says both FDR and some extremely vague reference to Jefferson
Reagan => Google search says both Calvin Coolidge and FDR; Coolidge is from a .gov
Carter => I see nothing
Ford => Nothing
Nixon => Google shows Wilson, but there's no clear source
LBJ => Nothing
JFK => Nothing
Eisenhower => Nothing

Anyone know any more?