Following on I've only had a cursory glance (as I've an LBSCR interest) at the list and these 1890's drawings are there
among others.
Beware - there's 678 pages and a search on LB highlights 565 entries!
LB & SCR Brighton Open wagon general arrangement 1896/04/2812914174
LB & SCR Brighton Goods brake 1896/08/1712914241
LB & SCR Brighton Rail & sleeper wagon 1896/xx/xx12914102
LB & SCR Brighton Open goods wagon1896/01/2112914096
LB & SCR Brighton Ballast brake van 1896/01/0112913967
LB & SCR Brighton Timber wagon 1894/12/1112913842
LB & SCR Brighton Cattle wagon 1894/02/0812913835
LB & SCR Brighton Goods brake 1894/02/1512913297
LB & SCR Brighton "A" class wagon 1894/07/2512913629
LB & SCR Brighton 10 tons machinery wagon Marked "see 6238" 1892/07/1412913823
LB & SCR Brighton Tar tank 1893/12/1212913832
LB & SCR Brighton Gun carriage 1894/01/2312914530
LB & SCR Brighton 6 tons ballast wagon 1899/07/1