Does anyone know what the minimum clearances were for local/rural roads when crossed by the railroad in the 1950s? 

And is the NMRA Clearance of ~22 Scale feet the minimum clearance the railroads used for when being crossed by a bridge (road or railroad) ?  Or was the standard clearance taller for the early 1950s?

Thanks again.

Ken L.

I am running out of the commercial lichen I have acquired over the years.

I still need a lot of lichen for my 3D backdrop.

(detailed here http://model-railroad-hobbyist.com/node/24749?page=5)

I live in MUskoka, so wild lichen is plentiful. I can just go for a walk and pick my own.

My question is how to prepare it....

I have read two sources, one mentions glycerin and the other says use matt medium. The matt medium would be a lot cheaper. Any one have thoughts on either method?

I have a number of Walthers Cornerstone kits and wondering if anyone has any good tips for assembling the walls?  I seem to struggle with getting the walls to have a good strong connection between the pieces.

So, I was just checking out my Scenic Express Father's day special email and noted that Noch, Heki and Grasstech were all on sale.

They also generally all talked about recent improvements to the products and they each have a slightly different design.

It made me wonder has there been a recent review of the current models of these products? Preferably on MRH, but I'd take anywhere. 

Google, both generally and the site search suggest not. Lots of threads on making your own. Which is great, but I'm curious on the commercial products.