Sheila Carroll just dropped us a note to let us know that, based on many parent requests, Living Books Curriculum has published Emma Serl's Intermediate Language Lessons as three lay-flat-and-write-in books. Each "part" in the original book is a separate write-in text. They're recommending Part I for grade 4; Part II for grade 5; Part III for grade 6.
They've done some editing and enhancing, as well. Here is the description from the preface:
Improvements to the 1914 edition include enhancing the quality of the photographs
and art prints, as well as updating and editing some text for clarity. Added resources are
biographies of the contributing authors and the complete poems of excerpted works.
Further helps include bold text when an important grammar rule or statement is taught,
directional words, or words to look up in a dictionary.
If you type "Intermediate" into the search box on their site, you'll see all three new write-in books. You can download samples on their site too.