What are some reasonable options for storing collections of [3 related
object variables]. I see that there are plenty of options for storing
collections of individual items (e.g., string or int array) or for
name/value pairs (e.g., hash table). But I have a need to create some sort
of a collection that lets me collect groups of 3 object variables, like
this:

object_1a     object_1b    object_1c
object_2a     object_2b    object_2c
object_3a     object_3b    object_3c
object_4a     object_4b    object_4c
etc...

Each of these will be for instances of the MVP pattern - so for example
object_1a would be a Model instance, object_1b would be the associated
Presenter and object_1c would be the associated View object (custom Form).

Code then encapsulates this collection would need to be able to search this
collection for a specific Model instance and then be able to return its
associated Presenter or View.

Thanks for your time and consideration.

-Jeff