I shall search for easter eggs now.
Here is some i found when searching:
The Obscuridad del Santo Andres Rosary. The description says "From a far-off land." It's talking about San Andreas.
.Strange writing in tumbleweed. '' The devil has got into that beast''
.The tumbleweed ghost
.Cave at tall trees nekoti with bones in it.(possibly bigfoot?)
.The shooting range at macfarlene ranch is similar to red dead revolvers shooting range
.A san andreas reference. ''del santo andres rosary''
.De santa is a reference to scarface.
.Strange pattern on the wall at the very bottom of mexico (campe mirada). I think its a drawing of a cowboy on a horse.
.Very big bat swarm flys out tumbleweed mansion at 6pm.
.barking dog at tumblweed. (ghost dog???)
.Malideria marriage easter eggs.
tombstones at Coot's Chapel. It shows the members of the
family and Marshal Johnson's
and the Cowboy With No Name (Movie reference to The Man With No Name).
Also, those campfires where people are telling you stories, some of them talk about Red Harlow.
These are some i found on some sites from a 'red dead redemption' search on google so dont blame me if they are wrong.