Joel A. Tarr (born 1934) is an American

historian A historian is a person who studies and writes about the past and is regarded as an authority on it. Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human race; as well as the stu ...

, currently the

Richard S. Caliguiri Richard S. Caliguiri (October 20, 1931 – May 6, 1988) was an American politician who served as the mayor of Pittsburgh, Pennsylvania from 1977 until his death in 1988. Early career Caliguiri was of Italian Arbëreshë people, Arbëresh ances ...

University

Professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who pr ...

of History and Policy at

Carnegie Mellon University Carnegie Mellon University (CMU) is a private research university in Pittsburgh, Pennsylvania. One of its predecessors was established in 1900 by Andrew Carnegie as the Carnegie Technical Schools; it became the Carnegie Institute of Technology ...

. His research includes

environmental A biophysical environment is a biotic and abiotic surrounding of an organism or population, and consequently includes the factors that have an influence in their survival, development, and evolution. A biophysical environment can vary in scale f ...

and

urban development Urban means "related to a city". In that sense, the term may refer to: * Urban area, geographical area distinct from rural areas * Urban culture, the culture of towns and cities Urban may also refer to: General * Urban (name), a list of people ...

and systems and their effects. Tarr co-authored a book with

Clay McShane Clay McShane (died October 29, 2017) was an American historian. Career Clay McShane studied at the City College of New York and graduated in 1968. He received a certificate in the history of technology from the Smithsonian Institution, where he ...

titled, ''Horse in the City: Living Machinces in the Nineteenth Century''.

References

1934 births Living people 21st-century American historians 21st-century American male writers Carnegie Mellon University faculty Northwestern University alumni Rutgers University alumni Leonardo da Vinci Medal recipients American male non-fiction writers {{US-sci-historian-stub