I am sure there are others but I suggest looking at Adobe Acrobat. There are free tools that do the same thing. You can install one that gives you a print to PDF option and then stitch them all into one PDF at the end. If you want tobine content from multiple sources on a single page then you can paste things into Word or into PowerPoint and convert the result into PDF. There may be better options but this is what I am familiar with and uses tools that are either free or most people already have.