Who was Billy the Kid Starter Activity
A great picture reveal activity
I would use slide 2 first as a block reveal mystery. Students have to guess who the picture shows - click one box at a time.
You could number the boxes and think of your own questions to ask students - you could draw the numbered questions.
I would the use slide 1 to base discussion/spider diagram, brainstorm any pre-existing knowledge. I hope these points help.