International Concepts Unfinished Wood 3-Shelf Bookcase (38-in W x 36-in H x 12.3-in D) in the Bookcases department at Lowes.com
McKenzie 48" Wide Alder Bookcase by Wittier Wood Furniture
Grundy 48" Wide Dry Oak Double-Wide 6-Shelf Bookcase - #7N866 | Lamps Plus
Amazon.com: Camaflexi Shaker Style 4 Shelf Bookcase / Solid Wood / 48 inch High / Adjustable Shelving / Closed Back / Display Bookshelf for Living Room, Bedroom, Home and Office, White : Home & Kitchen
48″ Wide Mission Bookcase by Furniture | HOM Furniture
Grundy 48" Wide Dry Oak Double-Wide 6-Shelf Bookcase - #7N866 | Lamps Plus
48 Inch Wide Bookcase | Wayfair
12 Shelf Triple Wide Wood Bookcase, 48 inch Tall - Oak Finish - Plycraft MI7248-D