Immutable and Mutable Collection Packages | SpringerLink
GitHub - scala/scala-collection-compat: makes some Scala 2.13 APIs (primarily collections, also some others) available on 2.11 and 2.12, to aid cross-building
Scala Collections
The Architecture of Scala 2.13's Collections | Scala Documentation
Collections in Scala
Scala collections - Building Applications with Scala
Scala collections classes: Methods, organized by category | alvinalexander.com