02 Resources
A great, but wordy, resource for anything related to scanning, file types, and photography
https://support.apple.com/en-us/HT201302
http://osxdaily.com/2010/07/10/transfer-photos-from-iphone-to-computer/
Good info on Apple backup and downloading to computer
http://www.howtogeek.com/225333/18-things-you-may-not-have-known-google-photos-can-do/
Good info for Google Photos
http://lifehacker.com/photo-scanning-showdown-photoscan-vs-photomyne-1789327409
A nice review of Photoscan versus it's nearest competitor Photomyne
https://support.google.com/photos/?hl=en#topic=
A link to the Google Photos help center
http://photokore.com/tutorials/main/html/ppi_dpi/en
http://99designs.com/designer-blog/2013/02/26/ppi-vs-dpi-whats-the-difference/
Both links discuss differences between PPI and DPI, more of interest to those with printing as an end result
http://www.thebestscanners.com/photo-scanners
A helpful guide for buying a flatbed scanner
The Institute of Historical Survey is a non-governmental funded facility near Las Cruces NM. They can scan and do film transfers, etc. They are also an archive and research facility and would love donations of any original film or other historical media you might be tempted to throw away.
http://www.dvdyourmemories.com/denver/
http://www.leavealegacytoday.com/
The above 3 links are local Denver businesses that specialize in scanning your paper photos to digital. These sites are also a source of information about scanners and resolution.