Treat the cracks and crevices wherever the pests seem to be entering. Never apply pesticides or other chemicals directly to paper or textiles, which could be damaged.
Ant and roach sprays are an effective treatment; follow manufacturer's instructions.
Boric acid dust, which is long lasting and low in toxicity, can also be helpful, but is not as easy to apply to crevices as a spray. It is available at hardware stores and home centers.
Isolate valuable objects until you are sure they are completely free of infestation. For example, wrap books or textiles in clear polyethylene sheeting and carefully seal them with tape. If after two or three weeks no evidence of insect activity is present, the object can be displayed or stored with the rest of your collection.