No Plastic Sleeves: The Complete Portfolio Guide for Photographers and Designers - Larry Volk, Danielle Currier - Google Books

https://books.google.de/books?id=ZXe4Uv1u2UUC&pg=PA109#v=onepage

Your resume and cover letter, as well as a digital portfolio, business card and mailers, will function as the first contact and impression you make. These items will work to get your "foot in the door." Ultimately, however, it will be your portfolio book…