Set of Old Installations of the Polytechnic School: library

Polytechnic School of the University of São Paulo: unidade acadêmica de pesquisa e ensino superior

signature: handwritten mark made as a proof of identity and intent

building: structure, typically with a roof and walls, standing more or less permanently in one place

room: distinguishable space for humans within an enclosed structure

hand tool: tool held and powered manually

Avenida Tiradentes: road in São Paulo, Brazil

educational institution: institution that provides education

school: institution for the education of students by teachers

20th century: time period between January 1, 1901, and ended on December 31, 2000

São Paulo: municipality of São Paulo state, Brazil

vista interna: tipo de fotografia

daytime: period on any given point of the planet's surface during which it experiences natural illumination from sunlight

vista externa: tipo de fotografia

vista pontual: tipo de fotografia

institute of technology: college or university for applied sciences