Martha Freeman

Seven-year-old Tessa and ten-year-old Cammie, the first female president's daughters, investigate when gold is discovered on the White House grounds and Tessa's piggy bank goes missing.

"A collection of biographies of twenty groundbreaking women scientists who were curious kids and grew up to make incredible discoveries." --

Eleven-year-olds Luis and Maura investigate the cause of a long-term, city-wide power outage in Hampton, New Jersey. Includes facts about electric power and instructions for assembling an emergency kit.

"City girl Effie Starr Zook is not excited about spending the summer on her aunt and uncle's farm in Nowheresville, Pennsylvania, until she stumbles across a mystery that leads her smack into an old family feud"--

"Secret Cookie Club members Grace, Emma, Olivia and Lucy are thrilled to be back in Flowerpot Cabin with their beloved counselor, Hannah. But when a mysterious letter arrives, Hannah is plunged into despair. After puzzling out the contents of the letter, the campers make a plan to help Hannah--a plan that requires a daring mission to boys camp and a big batch of campfire cookies"--

"In 1949 Philadephia, Mary Mouse and an orphan named Caro embark on an adventure when they team up to expose criminals and make the Cherry Street Orphanage a safe haven for mice." -- Verso.

When teenaged Holly takes charge of a birthday celebration for her two-year-old twin brothers, she gets more than she bargains for in mayhem, madness, and mess.

Baby Bear and Goldilocks contentiously relate the events of an action-packed week in the Enchanted Forest when Goldilocks stays with the three bears waiting for the Big Bad Wolf to leave.

"Mark Kelly and his twin brother are back for more outer space adventure, this time fixing up an abandoned Apollo command module and taking off to rescue a Russian cosmonaut who is stranded in space"--