London Underground System published series of posters inviting travelers to make suggestions which might be useful in promoting their own comfort and increasing generally amenities of travel underground; many changes are brought about through suggestion bureau.
Suggestions for improvements
Elec. Traction
Electric Traction ; 25 , n 4
1929
2 pages
1 Fig.
Article (Journal)
English
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Engineering Index Backfile | 1946
|Realistic manpower suggestions
Engineering Index Backfile | 1944