Special pencils for writing on photos are available in photo shops for a small price. Don't take apart photo albums, not even stranger's albums that were bought for a song at estate sales. Albums reveal a great deal more about the person or family than individual photos do. Don't try to repair a damaged photo yourself. Soaking curled pictures or taping ripped ones promises disaster.
Paper clips rust and ruin photos.
Tape grows yellow and crispy, staining the photos. If you absolutely insist on taping photos, at least work from the back. Select a photo album that will protect your photos, not ruin them as many albums do. Most inexpensive albums wreck pictures. This kind of album causes rapid fading and discoloration.