Please create series for these titles

[Ricardo]

Hi! The following four books belong in a series called "Leyendas del Colt". Series name and number was added to the titles but this did not create the series (I guess the publisher did not know that series could only be created by a librarian).

The four books are the following:

https://www.goodreads.com/book/show/4...
https://www.goodreads.com/book/show/4...
https://www.goodreads.com/book/show/4...
https://www.goodreads.com/book/show/4...

also, there seems to be a two separate entries for the first book. Would it be possible to merge them into one?

Many thanks!

[Michele]

Done https://www.goodreads.com/series/3370...