senior teacher in school searching in a book

60s active adult age aged alone american book books boomer boomers bright camera casual caucasian class classroom clothing color contact day daylight desk education elderly european exercise eye face female gray hair health healthy horizontal image indoor indoors lecture lecturer lifestyle looking mature offish old older one only people person photo portrait room school searching seated senior serious severe severity single sit sitting sixties stockphoto table teacher teaching textbook thoughtful unsmiling white woman work workbook working