We discovered the Golly Sisters books by Betsy Byars at our local library. And we've checked them out a LOT! Written in the 1980's and early 1990's, these books are a delight.Meet the Golly Sisters: two singing, dancing, thoroughly lovable, slightly dim-witted sisters traveling west in their covered wagon, who love putting on shows for people in the towns they pass through. They get into one misadventure after another.
I think the antics of the two sisters really resonates with my girls, because it reflects the rivalry and love that real sisters have. And Sue Truesdell's whimsical, funny illustrations fit the text perfectly. These books make my six year old laugh out loud and come running to share passages and even whole chapters with me. They are great fun for reading aloud to your non-readers, too.
Published by HarperCollins Publishers. Later versions list them as a reading level 3.

