Patrons can borrow materials from libraries nationwide.

Search Using InterLibrary Loan

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NOTICE Re: Prospector Service

On April 1, 2016, the Library transitioned to an entirely new online catalog system. Prospector is now available WITHIN the main catalog. You do not need to access a separate account to search for items via Prospector. 

Prospector is a central catalog for more than 40 public, academic, and special libraries in Colorado, Wyoming, and Missouri. The system includes books, eBooks, journals, movies, music, government documents and many other items. With this system, Library cardholders may request all lendable items from any partner library with quick delivery to the Longmont Library at no special cost.

Access Prospector Now in the Main Catalog:

  1. Do a regular catalog search by entering your information (keyword, title, etc.) in the search bar at the top of the page.
  2. If the item you are searching for is not available in our catalog, you can find the Prospector link by scrolling down the page and clicking or tapping the "See all Results in Prospector" button.

Search the Library Catalog




Still Can't Find What You're Looking for?  Try Interlibrary Loan!

The Interlibrary Loan service allows Library cardholders to borrow items from libraries nationwide. 

What is available?

  • Books, audiobooks, periodical articles, and some newspapers on microfilm.
  • Some libraries will lend CDs and DVDs.
  • Census data on microform can be obtained for a prepaid fee.

Place a request online:

Place a request by phone:

  • Adult Reference Services, 303-651-8472 or 303-651-8473
  • Children's and Teens' Services, 303-651-8477

Have a Suggestion for a New Item at the Library?

If you don't find what you're looking for in the Library catalog, through Prospector, or through InterLibrary Loan (ILL), let us know and maybe we'll be able to purchase the item and add it to our collection!

Click or tap here to make a suggest an item the library should buy for its collection.

Prospector FAQs

  • Library

    • How long does it take for my Prospector request to arrive at the Longmont Library?

    • Once my Prospector request arrives, how long do I have to pick it up?

    • How will I be contacted when my Prospector request arrives?

    • Can I return my Prospector item to the loaning library?

    • How long can I keep my Prospector item?

    • What are the overdue fines if I turn in my Prospector item late?

    • How do I check the status of my Prospector requests?

    • Where do I pick up my Prospector item?

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