Published in 1926, but with artwork pre-dating 1917, whose copyright has expired. An expired copyright means that you are free to use these photos in whatever capacity you wish, except you may not link to them at this site.
The assurance of the believer is not that God will save him even if he stops believing, but that God will keep him believing – God will sustain you in faith, He will make your hope firm and stable to the end. He will cause you to persevere.
John Piper
Butterflies–1926-Clarence-M-Weed