A and B; C is unlikely.
Researching historical records, primary sources like letters or journals, biographies written by other historians, and conducting interviews with experts in the field.
G. A. Roberts has written: 'Distant force' -- subject(s): Biography, Businessmen, Inc Teledyne 'Tool steels' -- subject(s): Tool-steel
Elma G. Farnsworth has written: 'Distant vision' -- subject(s): Biography, History, Inventors, Television
Monica Brown has written: 'My name is Gabito' -- subject(s): Juvenile literature, Colombian Authors, Biography, Spanish language materials, Bilingual 'Tito Puente, Mambo King =' -- subject(s): Salsa musicians, Juvenile literature, Biography 'Clara and the curandera' -- subject(s): Bilingual, Behavior, Healers, Spanish language materials, Family life, Fiction 'My name is Celia' 'Marisol McDonald doesn't match' -- subject(s): Individuality, Bilingual, Racially mixed people, Spanish language materials, Hispanic Americans, Fiction 'My name is Celia' -- subject(s): Juvenile literature, Singers, Biography
Jerry Kramer has written: 'Lombardi' 'Distant replay' -- subject(s): Biography, Football players, Green Bay Packers (Football team), History
John Mansfield Thomson has written: 'Farewell Colonialism' 'The Oxford history of New Zealand music' -- subject(s): History and criticism, Music 'A distant music' -- subject(s): Biography, Composers
interviewing the subject or person who knew the subject.
Eduardo Rescigno has written: 'Mozart' -- subject(s): Composers, Biography 'Da Ponte' -- subject(s): Librettists, Biography 'Puccini Dictionary' 'Bach' -- subject(s): Composers, Biography 'Beethoven' -- subject(s): Composers, Biography
Significant ones in the life of the subject of the biography
LuLu Roman has written: 'LuLu' -- subject(s): Christian biography, Entertainers, Biography 'LuLu' -- subject(s): Christian biography, Entertainers, Biography
Carmen T. Bernier-Grand has written: 'Pablo Picasso' -- subject(s): Juvenile literature, Biography 'Diego' -- subject(s): Juvenile literature, Painters, Biography 'Who helped Ox?' 'Alicia Alonso' -- subject(s): Ballerinas, Juvenile literature, Biography, Ballet dancers 'Jueza Superior Sonia Sotomayor' -- subject(s): Juvenile literature, Biography, United States, Judges, United States. Supreme Court 'Poet and politician of Puerto Rico' -- subject(s): Juvenile literature, Biography, Governors, History, Statesmen 'Juan Bobo' -- subject(s): Juan Bobo (Legendary character), Legends, Folklore, Tales, Spanish language materials
Heinrich Viehoff has written: 'Goethe's Leben' -- subject(s): Biography 'Goethe's Leben' -- subject(s): Biography 'Schiller's Leben' -- subject(s): Biography
Xinsheng Ma has written: 'Liang Jingkui' -- subject(s): Physicists, Biography 'Xu Xurong' -- subject(s): Physicists, Biography 'Yan Jici' -- subject(s): Physicists, Biography 'Liu Guangzhi' -- subject(s): Mining engineers, Biography