Re: Tobin's Spirit Guide! (NEW sample pic pg. 4)
Hopefully I'm not too late to the party to offer some ideas.
I'm not sure what you have for North American spirits, but I think the Wendigo is an important addition. Wikipedia's summation is:
It is thought of variously as a malevolent cannibalistic spirit that could possess humans or a monster that humans could physically transform into. Those who indulged in cannibalism were at particular risk
This was a spirit popular in Algonquin-speaking communities.
As for the book itself, I've been doing a bit of research of late and might have some useful information.
A book like this in 1928 would likely have been a somewhat niche book and as such would either have been a book of low quality made cheaply, or a book of great quality and quite expensive. In the case of the later, the book itself would likely be printed via letter press. There are quite a few printers still doing letter press, but it would likely add to the cost of the book itself. If you like, I could help source some out.
The interior covers of the book would also likely be quite colourful as seen
here at the 4:43 mark. This is a process that dates back to least the mid-19th century.
Also, I'm fairly certain I might have some files or templates kicking around that will provide proportions for traditional page layouts.
Lastly, have you given any thought to fonts?
Hopefully I've been of some help and not totally geeked out on you.