Last Seen has been on The Best Sites Where Students Can Transcribe Historical Texts list for awhile because it offers students, and anyone else, the opportunity to help transcribe old ads from formerly enslaved people who were searching for family members.
They’ve now expanded their website to include excellent lessons, and examples of student work created from them, for teachers to use.
I’m adding this info to:
The Best Sites To Teach About African-American History
USEFUL RESOURCES FOR LEARNING ABOUT THE 400TH ANNIVERSARY OF BRINGING ENSLAVED AFRICANS TO AMERICA