Not only are those pictures interessting as historic documents of historic racing in the 1950s to the 1970s, but the cars can easily be connected to their Serial Numbers because of the discription of the photos.
If you use our databases of Race Results (Sports Car Racing, Formula Racing) you can easily look up the specific race as well as the drivers and cars entered.
Two eBay-sellers often show Ferrari-related period pictures, just have a look, we promise to keep up entering race results frequently:
http://www.ebay.co.uk/sch/fotovantage/m.html?item=330852219091&pt=UK_Sports_Memorabilia_ET&_sacat=0&hash=item4d085438d3&_nkw=ferrari&_sop=10
http://www.ebay.co.uk/sch/m.html?item=290838695069&pt=UK_Sports_Memorabilia_ET&_sop=10&_sacat=0&hash=item43b7564c9d&_nkw=ferrari&_ssn=jaguarmotorracing&_pgn=2&_skc=50&rt=nc