[1] The organization was formed in 1974 in Dallas, Texas, as the AMIGOS Bibliographic Council.

In July 2012, Amigos merged with Missouri Library Network Corporation (MLNC), an organization similar to Amigos headquartered in St. Louis.

[3] The combined organization retained the Amigos name with Dallas as its headquarters and an office in the St. Louis area.

The new organization became the largest library network west of the Mississippi River, comprising libraries and cultural heritage institutions in 22 states.

[4] Amigos Library Services is similar in scope to other library-oriented consortia such as the Midwest Collaborative for Library Services, OhioNet, and Lyrasis.