. "Foundation series#Other authors contributing to the expanded series" . "Foundation series" . "''Foundation'' universe" . . . . . . . . . "The Foundation Trilogy" . "Foundation series" . . "The ''Foundation'' Series" . "'' Foundation''" . . . . "''Foundation'' trilogy" . . . "''Foundation'' series timeline" . "''Foundation'' Trilogy" . "novels of the same name" . . "Foundation series#Fictional timeline" . "Foundation Trilogy" . "''Foundation'' Series" . . "sacked in the year 12,328" . . "Foundation" . "Foundation Series" . "The ''Foundation'' series" . "''Foundation'' series List of books" . . . . . "''Foundation''" . "Isaac Asimov's ''Foundation'' trilogy" . "the ''Foundation'' series" . "''Foundation'' series" . "The Foundation" . "future history" . . . "Isaac Asimov's ''Foundation''" . . . "The Foundation series" . . . "''Foundation'' series list of books" . . "Foundation_series#Impact_in_fiction_and_entertainment" .