Search on iDiscover; for instance, a search term might be 'derby hat'
Choose 'Images' from the 'Resource Type' option
Click 'full text available' on the resource you'd like to see
Click through to the image page and look for details about copyright; see here for the 'derby hat' example
For instance 'No known restrictions' will mean at least in theory you can use the image on a public website, for conference slides etc. though it's always best to contact the producer to make sure and to credit when using
If you have any questions about using a specific image, email library@lib.cam.ac.uk
