It's a sad day when you spend hours looking for the right template, only to find the site where you found it has been shut down—or worse, it's still there, but now it's riddled with ads and pop-ups. The worst part is that this actually happens a lot. A lot of the time, you'll feel inundated with ads on sites that are supposed to be providing free templates. And even if you're lucky enough to find one that isn't ad-ridden and is still up and running, it may not quite be what you were looking for anyway. Anyway, I found on
docsandslides.com/googledocs/timeline/ a few interesting templates that I used for my projects, and there are plenty more.
