unique 40069 & nostalgic 40060-40076

Hi all

I have added some new class 40 photos including some early ones from 1960 showing the ladder on the front of the loco, and unique 40069 with the bodywork cut away, why was this done?
40069 Wakefield Kirkgate
http://www.class40s.photos.gb.net/p59794134.html
40069 Knottingley & unknown
http://www.class40s.photos.gb.net/p59794135.html
http://www.class40s.photos.gb.net/p65524730.html
D275 Clearly showing the ladder
http://www.class40s.photos.gb.net/p65524682.html
D276 York 1960 again ladder prominant
http://www.class40s.photos.gb.net/p65525394.html
Heres a gem
D271 9F 92231 & 2 B1's 61238/61319 York North Shed 20/4/68 (Bill Wright)
http://www.class40s.photos.gb.net/p59794300.html
271 March 7/10/68 (Bill Wright)
http://www.class40s.photos.gb.net/p59794310.html
40060 Crewe (Keith Till)
http://www.class40s.photos.gb.net/p59794136.html
40062 Workington (David Heath)
http://www.class40s.photos.gb.net/p59868062.html
40070 Derby July 1977
http://www.class40s.photos.gb.net/p59794297.html
40072 St Rollox works
http://www.class40s.photos.gb.net/p59794303.html
40073 & Class 15 D8237 Toton
http://www.class40s.photos.gb.net/p59794302.html
40074 Warrington 24/3/83
http://www.class40s.photos.gb.net/p59794286.html
http://www.class40s.photos.gb.net/p59794290.html
40075 Doncaster
http://www.class40s.photos.gb.net/p59794281.html
40076 Burscough Bridge
http://www.class40s.photos.gb.net/p59794288.html

Neil