Statistics for 5 yr 1931 to 1935 for United States and Canada compiled by Committee on Ties of Am Railway Eng Assn.
Table tells story of tie renewals during depression
Ry Age
Railway Age ; 101 , n 9 ; p 313-315
1936
3 pages
Article (Journal)
English
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Table tells partial story of tie renewals in 1939
Engineering Index Backfile | 1940
Engineering Index Backfile | 1941
Engineering Index Backfile | 1938
Engineering Index Backfile | 1938
Engineering Index Backfile | 1937