There's a ton of literary criticism in the reference collection. The set Twentieth Century Literary Criticism will have oodles of essays on Hucklebery Finn that you won't find anywhere else. The bold number below is the volume. The other numbers are the pages that have content on Huckleberry Finn. So, for example, I could go to volume 161 and start looking on page 208.
6:454-7, 459- 61, 463-70, 473-6, 478, 480, 482-5; 12:427-9, 431, 434-7, 439-45, 448, 451, 454;19:351-69, 372-6, 378-88, 391; 36:352, 354-5, 358-63, 366, 369, 372, 375, 379, 381-7, 392; 48:334, 336, 339, 341-9, 351-2, 356, 359, 361; 59:168, 173-7, 181-9, 196, 201-3, 208-10; 161:208-351; 185: 243, 249, 256, 259, 307, 310, 320, 328; 260:172-75, 177, 193, 198, 205-17, 222-23, 227, 232-33, 236, 239-41, 260-63, 265- 66, 269-74, 284-89, 292, 297, 302
To see what's available at ARC, try browsing around PS 1305 on the third floor.
Use the Library Catalog to search for books and videos located in the Los Rios libraries. The tutorial below will get you started.
These books all include analysis of Huck Finn as well as information about Mark Twain. You'll have to locate the book and browse the table of contents.