Transcontinental Railroads

Transcontinental Railroads — page 5
Chinese laborers of the Central Pacific Railroad CPRR helped build snow sheds These wooden structures kept snow off the tracks by letting avalanches slide right over top HISTORICAL SOURCES TYPES OF EVIDENCE The very ink with which all history is written is merely fluid prejudice U S author Mark Twain 1897 Evidence about an event a person or a place is called source material Sources are anything that has been left behind by the past They are the building blocks of our understanding Source material can be created by companies artists or ordinary people It can be the result of someone’s work or hobby or it can be created by accident Sometimes source material is well known Important artifacts are often on display in museums for everyone to see Libraries allow everyone to borrow historic materials and study them Ruins or monuments are out in the open and can be visited by everyone Sometimes source material is controversial It might remain hidden because its existence could be dangerous to the people who own it During World War II 1939 1945 Germans who had papers or photographs of Jewish people might be accused of helping them and be punished themselves by the Nazi government At other times source material is preserved by accident Old newspapers might be used to pack china in an attic Letters or reports might be lost during a move and found later in an unexpected spot The cargos of ancient ships might be sealed in a shipwreck deep in the ocean Paintings might be hidden in a cave for protection Source material for the transcontinental railroads is usually easy to find Government and company reports maps and records are available for the public to read They are kept in museums or libraries Photographs maps engineering drawings newspaper articles and magazine articles can be viewed online as well as in actual archives 8 UNCOVERING THE PAST