Answer: yearbooks

AnswerCrossword Clue
YEARBOOKSGrads' mementos
YEARBOOKSBallpark souvenirs
YEARBOOKSAnnual school publications
yearbooksYEARBOOK, a book published annually
yearbooksAn annual publication giving current information and listing events or aspects of the previous year, esp. in a particular field
yearbooksA book containing photographs of the senior class in a school or college and details of school activities in the previous year