British History Online includes Ordnance Survey 1:10,560 and 1:2.500 Epoch 1 maps for Oxfordshire and Berkshire. Freely available.
A specialised search is available on SOLO for maps. Click 'Map search' from the options to the right of the main SOLO search box.
You can then do a basic keyword search, but if you select 'Advanced search' you can search by place covered, subject, scale or date.
For further help on searching for maps using SOLO please consult the Maps Libguide.
The Bodleian Libraries have extensive printed map collections as well as excellent digital mapping facilities.
A good starting point for finding information about map collections is the guide 'Finding aids for Maps'. You may also find the Bodleian Library Map Room website useful
Digimap is a key resource for digital mapping and can be used with software such as MapInfo. If you have not used these tools before, you are advised to contact the Map Room staff. Also, please note that a Single Sign On is required, even if you are using a PC connected to the Oxford network.