I've done this with my students with great success. Working in pairs, students receive a card (included in this PDF) with a timeline fact on it. The timeline facts string together to create a basic Holocaust history timeline with points that are important for students to understand as they read Maus and process the historical context of the novel. I then give each pair a few photos that go with their facts (these can be located online: I recommend going to www.historyplace.com) so that students can visualize the facts. Then, the students work in pairs to (1.) underline key words in their fact, and (2.) illustrate the fact on the card.
Finally, students present their timeline facts and illustrations (I project these using an ELMO, but they can be presented in other ways). Students tell the class the key words that they underlined, and the class writes these key words down (i.e. "Hitler becomes fuhrer") on the note-taking sheet (PDF included here). This sheet of timeline facts becomes an essential tool in their notebooks as we read.
We then string the facts together on a large timeline that lives at the front of the classroom, and we refer back to it as we read Maus. Students add cards to the timeline that specifically relate to the story in Maus (i.e. when Vladek and Anja get married, etc.).