In reading order
Field Trip Mysteries: The Ghost Who Haunted the Capitol
Steve Brezenoff
The Zoo with the Empty Cage
Steve Brezenoff
The Painting That Wasn't There
Steve Brezenoff
The Burglar Who Bit the Big Apple
Steve Brezenoff
The Ride That Was Really Haunted
Steve Brezenoff
The Cave That Shouldn't Collapse
Steve Brezenoff
The Teacher Who Forgot Too Much
Steve Brezenoff
The Village That Almost Vanished
Steve Brezenoff
The Crook Who Crossed the Golden Gate Bridge
Steve Brezenoff
The Symphony That Was Silent
Steve Brezenoff
The Seals That Wouldn't Swim
Steve Brezenoff