Airing on Nick Jr. from September 6, 2005, to September 16, 2011, Go, Diego, Go! was the brainchild of creators Chris Gifford and Valerie Walsh Valdes. The series focuses on Dora the Explorer's cousin, Diego, an eight-year-old Latino boy who lives deep in the rainforest and operates an Animal Rescue Center. In each 23-minute episode, Diego hears an animal's cry for help and embarks on a mission to save it, with the help of his trusty friends: his 11-year-old computer-expert sister Alicia, his best pal Baby Jaguar, and a magical backpack called the that can transform into any tool he needs, from a hang glider to a rocket jetpack.

Thanks to the dedicated community of digital archivists uploading to the Internet Archive, Diego's rallying cry of "Al rescate!" (To the rescue!) will continue to echo for generations to come.

But two decades later, a new kind of rescue mission is underway. Physical DVDs are scratched, streaming rights have lapsed, and many classic episodes have become "lost media"—vanishing from official platforms due to licensing deals with music, wildlife footage, or voice actors.

Research methods to inventory holdings: