I want to be sure everyone in this group is aware of an outstanding set of lessons from Emerging America, a TPS Consortium member. It's called Puerto Rican Identity, and it includes helpful historical context, three different approaches to teaching with primary sources, and complete sets of Library of Congress primary sources that include images, audio files, maps, manuscripts, and music. It also follows Universal Design for Learning (UDL) principles.
From the lesson description:
Model Lesson for Engagement: In Puerto Rican Identity, students examine documents and other primary sources showing various generations of Puerto Ricans engaging with Anglo-American culture while preserving their cultural identity.
Cultural Considerations:
An essential facet of engagement is to ensure that materials and approaches are culturally relevant for the particular students in your classroom.
Puerto Ricans Arriving in at Newark airport, 1947
I would also suggest checking out all three Classroom Activity Ideas. Although geared to this unit, they would work well with all sorts of primary sources lessons no matter what the content.
3 - 5 6 - 8 9 - 12 Social Studies/History Bilingual Education/ESL Puerto Rico Teaching Strategies