The David Rumsey Map Collection sets the standard in the field claiming over 71,000 maps and images online, up from 66,000 in February. One useful feature of the Rumsey site that would be an asset for LAC is a list of recent additions so that they don`t necessarily fly under the radar.
For the London genealogists one of Rumsey`s recent additions is high quality maps from the Charles Booth Poverty Map Series. The resolution is of high enough quality you can read every word.;