The Cisco Kid was originally introduced in O. Henry's "The Caballero's Way".
However,in the book he was a dangerous desperado, not the "Robin Hood" type character created in the TV series, etc.
This comment is in answer to a request by another commenter.
He could not find out where the Cisco Kid character came from.
He could not find it in his collection of O. Henry works.
I hope this has been of some help to him.
I find it really difficult to make this simple comment 10 lines.
If you would like to research it yourself, you can do so on-line.
Simply type in O'Henry.
Look up his biography, and short stories.
There you will find "The Caballero's Way" listed.
However,in the book he was a dangerous desperado, not the "Robin Hood" type character created in the TV series, etc.
This comment is in answer to a request by another commenter.
He could not find out where the Cisco Kid character came from.
He could not find it in his collection of O. Henry works.
I hope this has been of some help to him.
I find it really difficult to make this simple comment 10 lines.
If you would like to research it yourself, you can do so on-line.
Simply type in O'Henry.
Look up his biography, and short stories.
There you will find "The Caballero's Way" listed.