The phrase "a collection of slides" is correct and usable in written English.
It can be used when referring to a group or set of slides, typically in the context of presentations or visual aids.
Example: "The presentation included a collection of slides that illustrated the key points of the project."
Alternatives: "a set of slides" or "a series of slides".
The park features three water slide towers, each featuring a collection of slides grouped by the level of thrill.
(2) Archiving and Retrieval it models the challenge faced by hospitals, diagnostic labs, and physicians in maintaining a collection of slides in a form that is easily accessible, always available, and universally sharable.
The archive provides funding for some archeological work in Mexico and maintains a collection of 12,000 slides of artifacts and ceremonial sites, as well as a library of 3,000 books, articles and conference papers.
The AAAS R&D Budget and Policy Program recently posted a FY 2011 Agency Budget Briefing Schedule and in January added to a collection of presentation slides: Introduction to the U.S. Federal Budget and Projections for Research Funding in the U.S. Federal Budget.
To date, in five rooms in his offices in Capo di Ponte, Mr. Anati and his staff of three have assembled a library of 40,000 books and reprints, 16,400 feet of rolls with tracings of graphemes, several thousand reports from various parts of the world, and a collection of 300,000 slides, representing about one-150th of all known material.
Proyecto CARIDAD (Chicano Art Resources Information Development and Dissemination) will assemble a collection of 18,000 slides of paintings, posters, murals and other works by Chicano artists.
A collection of colour slides.
A collection of colour slides and text.
Furthermore, the standardization of the protocol establishes a collection of histological slides systematically selected from specific areas.
The parallel text of this hallucinatory suite of prose poems – a "collection of magic lantern slides" – is a significant literary event.
The presentation itself, a collection of about 40 slides titled "The Conservative Message Machine's Money Matrix," essentially makes the case that a handful of families -- Scaife, Bradley, Olin, Coors and others -- laid the foundation for a $300 million network of policy centers, advocacy groups and media outlets that now wield great influence over the national agenda.
