From Long Ago v.1.2, lesson plans based on stories in the book From Long Ago and Many Lands by Sophia Fahs, is now completely online and can be viewed here.
These lesson plans were field tested at the UU Church of Palo Alto (UUCPA) in 2010-2012. The curriculum as a whole has now been incorporated into the regular rotation at UUCPA. Teacher feedback has been reasonably good. However, the long term plan (2-3 years out) is to update the stories, e.g., to remove gender-specific language where appropriate, etc.
Your feedback about this curriculum is welcome in the comments to this post.