Libya War Maps: The Fourth Batch

Libyan War Maps:  The First Batch
Libyan War Maps:  The Second Batch 
Libyan War Maps:  The Third Batch

Libyan War Maps: The Fifth Batch - The Geography of Oil
Libyan War Maps:  The Sixth Post - The Coalition's Size
Libya War Maps: The Seventh Post - The Invasion of Tripoli
Libya War Maps: The Eighth Post - More Battle of Tripoli Maps

The New York Times has an interactive day-by-day map of the war showing ground control, ground movements, and air strikes.

Meanwhile, Channel 4 has their own Google Maps mashup of the war day by day (last updated 24 March) with detailed information below the map.