The final push is being made to raise enough money to save a unique painting of Preston.
Led by charity the Friends of the Harris, hundreds of people have already made donations totalling half of the £4,400 needed to rescue the work which is in danger of decaying to the point where it can no longer be displayed.
The Friends have produced a two-minute film to explain why the painting - View of Preston from 1821 by John Jenkinson - needs to be saved for future generations, which can be seen on You Tube.
Councillor Veronica Afrin, cabinet member for culture and leisure service, said: “This is such a popular and important painting that we need to make sure it survives, for the benefit of all our visitors for years to come.”
Visitors to the Harris have until Sunday to see the fragile picture as part of the museum’s A Green and Pleasant Land exhibition.
Donations can be made online by visiting www.thebiggive.org.uk and searching for ‘Preston’, or they can be made at the museum by cash, card or cheque.