The second one is a 1973 model. They are worth a fair amount with nice ones selling for $3-5k.
The Harley-Davidson Baja 100 was a small displacement off-road motorcycle made for Harley-Davidson in Italy by Aermacchi, which was 50% owned by Harley-Davidson at the time. That’s likely why you don’t find it in the Harley Davidson picture books.