Linked from
The 31 pages that link to Local Group, each with the reason it gives.
Galaxy luminosity functionRelated: Its nearby dwarf galaxies provide a direct view of the faint end.
Great AttractorRelated: Its measured motion supplied a key clue to the nearby mass distribution.
Local VoidRelated: The Local Group lies along the Local Void's boundary.
M81 GroupRelated: It is a nearby counterpart for comparing group membership and galaxy evolution.