If I am not mistaken, Pastor Russell's first pamphlet (don't remember the name of it) was about the anti-typical interpretation of the ark in the wilderness. The material he wrote then was later included in one of the Studies in the Scriptures, volume 4 or 5. He didn't invent the typology about the ark, in fact there are other religions who still use the idea. But the Russellite's went wild with it and found interpretations in almost everything they looked at. I used to have Paul S.L. Johnson's series called 'Epiphany Studies in the Scriptures' and it is hundreds and hundreds of pages of type/antitype interpretations. Very foolish sounding now, but it illustrates the extent to which the Bible Student (and JW) movement was invested in the type/antitype thinking.