Slight tangent;
Whatever the publishing/copyright term for old books is,or does escape me. Public domain?
In any case,there's a treasure trove of these old "out if date" instructional books from the early 1900's. I snagged a few of them on sheet metal. Now to the point;
It's amazing how language and what's considered proper text in that time period differs from current "trade" manuals and such. I can see students,very well dressed and groomed sitting there, glued to the teacher.... listening and absorbing knowledge. Say what you want,my wife is a child development guru,joined at the hip with the hierarchy at the state level on public education. And here,100 years later... I double dare a HS age kid to even come close to the level of instruction,and inspiration available...... 100 years ago.
No,not ranting on public education. Just sayin,might want to give a look at some old,out of print books.