Concrete Mileposts on the N&W

[NW Mailing List]

I'll post this question again, after about a five year interlude, there having been no information having been developed from the last inquiry. Perhaps by now the gene pool has developed to a higher order. 

When did concrete mileposts come into use on the N&W, and of what construction were the previous mileposts? Do any photographs or drawings of the earlier mileposts exist? 

-- abram burnett 

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