Rancho Bernardo High School student, Ashley Rose, posted 500 photos of the 2017 event on Google Photos. They can be viewed by clicking this link.
The Rancho Bernardo NewsJournal photo gallery contains a collection of photos of the 2018 event. They can be viewed by clicking this link.
Photos of Spirit of the Fourth 2012, 2013, 2016, 2017 and 2018 are available here on Shutterfly. You can view these photos, download them, or order prints.
You can also post your own Spirit of the Fourth photos on the Rancho Bernardo Spirit of the Fourth Shutterfly page in the "Pictures" section.
Here is a slide show of a collection of 389 Spirit of the Fourth 2016 photographs taken by "Mr T".
Individual high resolution photos from this collection can be downloaded from Mr T's DropBox here.
Hans Wiesenfarth's Spirit of the Fourth 2014 photos are available on Picasa here.
Hans Wiesenfarth's Spirit of the Fourth 2015 photos are available on Picasa here.