Some meeting notices that are not posted to the City's online calendar are instead posted on the agency's webpages. Sometimes this is a link on the "Board Meeting Materials" page, sometimes elsewhere. There is no consistency. You can spend a lot of time hunting for the information only to find the link is bad.
In cases where a meeting notice is posted somewhere on the City's website, it often will not include an agenda. Most meeting notices with agendas do not include exhibits/attachments.