A "Specimen Page" from the Pen-Art book Bible Pearls of Promise published in 1887. I have also included the corresponding page from the actual book. Look close and you will see slight differences, most evident on the head of the top dove. I do not know if the sample page was enhanced with pen, or if the effect is achieved by the "new pen-ink" process being touted.
Salesman Sample Specimen Page from Bible Pearls of Wisdom Real-Pen Work Publishing Co. 1887 Collection Jim Linderman
See Also OLD TIME RELIGION blog