American Internet pioneer (born 1943) and one of 'the fathers of the Internet,' who developed TCP/IP technology and the first commercial email system. Four items signed in either ballpoint or felt tip by Internet pioneer Vint Cerf: a color glossy 8 x 10 photo of Cerf in later age; a satin-finish 8 x 10 photo of him holding a pipe in front of a chalkboard; and two Google Cloud business cards belonging to Cerf. In overall fine condition.