"Oscar in Africa" by Harry Castlemon is an adventure story about a young American named Oscar Preston who travels to Africa to gather natural history items for a museum. Set in the late 1800s, the book opens with Oscar in a Maritzburg hotel as he prepares for his expedition, but local cattle-dealers view him with contempt and suspicion due to his youth and nationality, creating immediate challenges. As he interacts with the locals, its revealed he has to overcome their schemes and prove his worth. The story highlights Oscar's courage and resolve as he faces dangers and questionable characters in the African wilderness, all while pursuing his ambitious goal.

Oscar in Africa
By Harry Castlemon
A determined young American faces treacherous locals and the harsh African wilderness in a quest to secure valuable specimens for a museum.
Summary
About the AuthorCharles Austin Fosdick, better known by his nom de plume Harry Castlemon, was a prolific writer of juvenile stories and novels, intended mainly for boys. He was born in Randolph, New York, and received a high school diploma from Central High School in Buffalo, New York. He served in the Union Navy from 1862 to 1865, during the American Civil War, acting as the receiver and superintendent of coal for the Mississippi River Squadron. Fosdick had begun to write as a teenager, and drew on his experiences serving in the Navy in such early novels as Frank on a Gunboat (1864) and Frank on the Lower Mississippi (1867). He soon became the most-read author for boys in the post-Civil War era, the golden age of children's literature.
Charles Austin Fosdick, better known by his nom de plume Harry Castlemon, was a prolific writer of juvenile stories and novels, intended mainly for boys. He was born in Randolph, New York, and received a high school diploma from Central High School in Buffalo, New York. He served in the Union Navy from 1862 to 1865, during the American Civil War, acting as the receiver and superintendent of coal for the Mississippi River Squadron. Fosdick had begun to write as a teenager, and drew on his experiences serving in the Navy in such early novels as Frank on a Gunboat (1864) and Frank on the Lower Mississippi (1867). He soon became the most-read author for boys in the post-Civil War era, the golden age of children's literature.