"If we are with the right and for it, though all the world have gone over to the other side, the long line of ancestral and glorified men are behind us, —troops of beautiful, tall angels, to enshield us from all wrong."  From Manual and Diagrams to Accompany Metcalf's Grammars by Carl Garrison, 1901.

From Modern English Writing by Douglas Bement, 1937.

"Explain, when you are able, how it happened that you did not foresee what occurred."  From Brown's Language Lessons by Henry Kiddle, 1889.

"I am sorry that you do not like me."  From The Essentials of the English Sentence by Elias H. MacEwan, 1900.

From Modern English Writing by Douglas Bement, 1937.

"We are often unable to act on our certainties; our objection to a contrary issue is so strong that is rises like a spectral delusion between us and our certainties."  From The Essentials of the English Sentence by Elias H. MacEwan, 1900.

"Walk while ye have the light, lest darkness come upon you."  From The Essentials of the English Sentence by Elias H. MacEwan, 1900.

From Better English Seventh Year by Jeschke, Potter & Gillet, 1930.

"Anger came next, his eyes on fire."  From The Essentials of the English Sentence by Elias H. MacEwan, 1900.

"Our evil will is momentous within ourselves, and it works its way outside us; it may be in the vitiation that breeds evil acts, and it may also be in the self-abhorrence that stings us into better striving."  From The Essentials of the English Sentence by Elias H. MacEwan, 1900.

From Modern English Writing by Douglas Bement, 1937.

From Grammar of the English Sentence by Jonathan Rigdon, 1903.

"He cried so loud that all the hollow deep of fell resounded."  From The Essentials of the English Sentence by Elias H. MacEwan, 1900.

From Ginn English Grade 8, 1984. 

From Modern English Writing by Douglas Bement, 1937.

From Harris's Spiral Course in English: Inductive Lessons in Language and Grammar, 1903.

The totem animal of sentence diagrams would seem to be the dog.  Rex Barks by Phyllis Davenport and Sister Bernadette's Barking Dog by Kitty Burns Florey.

Here's a sentence diagram that's a precursor to Lars Von Trier's Kingdom series.  From Grammar for Composition by C. H. Ward, 1933.

From Grammar of the English Sentence by Jonathan Rigdon, 1903.

Not only is sentence diagramming rarely taught, but textbooks also no longer mention prune whip.  From The New Building Better English 9, Teacher's Edition, 1955.