Use these web-based repositories to search for content that is free to use and share. Remember to check the license terms and include a credit -- Giving credit is a fundamental component of academic integrity.
Images with a CC0 license do not require a credit. They are free to use without attribution unless credit is required by your instructor.
CC0 images are an excellent option for brochures and posters
Use this NSCC Library IMAGE subscription resource for personal, non-commercial, or nonprofit educational purposes. Credit is required.