The database JSTOR (short for Journal Storage) covers many different scholarly disciplines. JSTOR is unique in that it is comprised of archived collections which means they encompass the complete run of each journal starting with its first issue up until a certain date, usually excluding the most recent years of these journals. In short, it's good for a contemporary/historical view of a topic, but not the most recent view.
(Coming January 1, 2026!) The database Artstor includes 2+ million "high-quality images, curated from leading museums and archives around the world. Artstor’s diverse collections are rights-cleared for education and research, and include Open Access content as well as rare materials not available elsewhere." (publisher description)
YouTube video: JSTOR isn't Google
(Runtime: 4 min 21 sec)
See this JSTOR guide to learn to use their database: https://guides.jstor.org/how-to-jstor/searching
Searching and saving images on JSTOR
(Runtime 2 min 27 sec)
See this JSTOR guide to learn to use images on JSTOR (including Artstor): https://guides.jstor.org/images