The Edge of Raven Pool and Bluebonnet Bend by Augusta Seaman

In The Edge of Raven Pool, Antoinette's father has died, and she is penniless.  Antoinette is sent to live with her aunt in Savannah, Georgia.  Tony is miserable at first, since Miss Spencer is cold and distant.  Tony soon visits her cousin, Theo, on the family's island plantation, and the two become close friends.

Tony finds a paper hidden behind a picture in one of the bedrooms of her aunt's house, and Theo tells Tony about the strange behavior of Marm Debbie, who goes to Raven Pool in the middle of the night.  The cousins discover that the two mysteries are likely intertwined and hold the key to a missing treasure.  Finding the treasure would help Miss Spencer avoid losing her colonial home to foreclosure.

The story is very interesting from the very first page.  This is an excellent book.  I was enthralled and read it very quickly.

In Bluebonnet Bend, Katharine and her mother go to San Antonio to stay on Uncle Ezra's ranch, which is partly owned by Katharine's mother.  Uncle Ezra has some kind of scheme in mind, and he needs Katharine's mother to grant permission.

Katharine becomes friendly with her cousins, Elizabeth and Don.  She also becomes acquainted with Felipe, an elderly man who squats on the property.  Katharine soon senses that Felipe is involved in some kind of mystery and that Don knows about it.  The two girls search for clues.

In this story, a Mexican ancestor of Felipe's is named Alessandro.  The name is Italian, not Spanish.  This bothered me.

This is a very good book.