OR operator in Search by Image Group Number (DGS) or Film Number
Is there a way to use the OR operator when searching by Image Group Number (DGS) or Film Number? For census or passenger arrival records, I often have information that would allow me to narrow the search of a collection to a handful of microfilm rolls based on location or date. Is there a way to utilize an OR operator when searching by film number so that 2-5 rolls can be searched simultaneously rather than needing to search an entire collection or search each roll individually? I've tried playing with the URL of the search results by adding "+", "|", "||", or "^" and an additional film number but they don't seem to be supported.