Fylde MP Mark Menzies has called for Lytham Library to return to its former home in Lytham Institute, amid speculation it could be housed elsewhere in the town.
Mr Menzies said: "The county council needs to understand the strength of feeling on this matter.
"We want Lytham Library back in the Institute building and there has been a lot of work and effort from the Friends of Lytham Library and Institute, involving my office, to get the plans to where they are today."
A fully-costed masterplan document highlighting four different possibilities for placing the library back inside the Institute building was drawn up by the Friends of Lytham Library and Institute, and handed to Lancashire County Council, which operates the library service, and Fylde Council, which owns the Institute building.
Mr Menzies added: "No questions have come back to the Friends group from Lancashire County Council regarding these plans, so I can only assume officers have not looked at them in any detail as yet.
"I am meeting with the chief executive of Lancashire County Council on Friday and will be making it clear I fully support the library going back into the Institute, which will then enable wider community use for the rest of the building, as is the desire of thousands of people in the town.
"With the library going back in there, we may also have space to exhibit some of Fylde's extensive art collection."
The plans for the Institute building centre on a mix of community and commercial use alongside the library, minimising costs for both local authorities while bringing the building back into use.