Here are some print company sample pages. Many are for businesses, so company name might be required:
Free Impossibleprinting Printed Swatch Book
Free Avery We Print Sample Pack
Free Bizinkprinting Sample Print Pack
Free Copy Cave Samples Pre-Printed Stock
Free Printswell Sample Pack – Printswell
Free Smartpress Paper Sample Book
Free Value Box Printing Printed Box Samples
Free Jukebox Print Recycled Sample Pack
Free Transferexpress Transfer Express Screen Printing Samples
Free 1800Postcards Sample Pack
Free Brooklyn Printing Sample Pack
Free Nameplates Printed Sample Labels
Free Wizzard Labels Label Samples
Free Inkreadible Sample Labels
Free PrintingcenterUSA Sample Pack
Free Prodigi Printed Sample Pack
Free Presentation Folders Samples
Free Convertible Solutions Samples
Free Erin Hanson Print Samples
Free Printrunner Sample Print Cards
Free Epson Professional Imaging Print Sample Kit
Free Print Dirt Cheap Printed Paper Sample