Racso and the rats of NIMH

Racso and the Rats of NIMH is a continuation/companion novel to [b:Mrs. Frisby and the Rats of NIMH 9822 Mrs. Frisby and the Rats of NIMH Robert C. O'Brien http://photo.goodreads.com/books/1166065688s/9822.jpg 839692]. Overall I think it maintains the same general feel of the original book (it helps that the author is [a:Robert C. O'Brien 6412 Robert C. O'Brien http://photo.goodreads.com/authors/1201021621p2/6412.jpg]'s daughter), and it works well as a continuation. The total amount of time that has passed between the first and this one is a bit tricky to determine, but I don't know that it really matters all that much.