Welcome to the Photo Restoration Resources. As a personal sideline, I restore old photographs back to their former glory using Adobe Photoshop CC. You will find below various resources that I have either developed myself or sourced elsewhere.
My Photo Restoration Tutorials
Digital Ironing (Frequency Separation applied to clothing)
This technique is famous for realistic skin retouching but can equally be applied to smooth clothing without introducing artifacts.
Additional Resources (links to external content)
Pattern Suppressor for Photoshop
This is a set of free plugins and actions for Adobe Photoshop that will let you easily, and with unparallelled quality, remove regular repeating patterns from images that cannot conveniently be removed by traditional means (for example paper texture and halftone patterns).
Plugins made by Ronald Chambers (Ronc) and Francesco Pierfederici. Photoshop Actions made by Jonas M.
Adobe Photoshop Restoration & Retouching, fourth edition by Katrin Eismann, Wayne Palmer and Dennis Dunbar.
Image Retouching Education (not photo restoration-centric but very useful)