Originally Posted by Thomas Bertilsson
Thats what I was taught by my photography professor. Do not do anything that can not be undone. Never dry mount ,and sign with a pencil rather then a pen, referring to fiber based prints. For RC prints I would think a pen would be ok because it is coated and not likely to bleed. Signing and titling the print on the bottom white border was acceptable, but it really a matter of personal preference. If you photograph is strong enough signing it isn't distracting. I would worry more about un spotted dust spots or someones hair getting trapped between the print and the glass, now that is distracting.