Senior lecturer looking at crumpled pieces of paper on table - Stock Photo & Image

Senior teacher in classroom at university or college. Male old tutor on board with notebook. Lesson seminar skills. Mature man study in high school

Grandfather education concept. Portrait of confident caucasian senior teacher in classroom. Middle aged man professor at high school

Grey hair professor showing fist to students

Grey hair professor using laptop at table in lecture hall

Pensive handsome grey hair man thinking and looking at chessboard at home

Serious senior man writing in notebook with pencil

Depressed senior man with crumpled papers in hands

Handsome grey hair man sitting at table with chessboard and looking at camera

Bearded senior writer sitting at workplace and looking at camera

Handsome grey hair man sitting at table and looking at photos at home

Overworked senior writer sleeping at workplace

Handsome grey hair man sitting at table and looking at photos at home

Thoughtful senior man in sweater writing letter