[thecatspajamas]

Why not use individual sleeves, and affix the sleeves themselves with double (or single) sided tape to a clear sheet rather than the archival paper in your scrapbook? That would allow you to see the actual backs.

While definitely better than most scrapbooking options, I'm a little leery of the corner mounts due to the number of photos I've handled with crimped corners after long years of storage in them. Definitely better than being glued to that standard black scrapbook paper, but they do still have potential to cause damage. This may be more of an issue of overloading the scrapbook, and could probably be pressed out, but I would lean towards mounting methods that do not bear directly on the item or result in uneven pressure on it for long-term storage.