I here suggest high quality lights from the Catalogue of Vaughan Ltd, some of which maybe suitable for your bookcases.  I may be able to incorporate these in your designs provided the width of the pilasters etc are agreed at our initial meeting and they are wide enough to take the light of your choice.  If a suitable light is suggested then you buy direct from Messrs Vaughan Ltd for fitting by your electrician.  Please check with Vaughan Ltd that they are available and confirm size (width and height overall) of the base plate (or back) which your electrician will fit the bookcase pilaster or panel-works.  These illustrations are for guidance and  as suggestions only.  I understand that they may be supplied in a variety of finishes.

For details on sizes and prices contact the supplier:-

Vaughan Limited

London
G.I. Chelsea Design Centre,  Chelsea Harbour  London SW10 0XE
020 7349 4600
 

Paris
15 Rue du Mail,  Paris 75002
01 40 26 50 11

New York
D & D Building - Suite 914,  979 Third Avenue,  New York,   NY 10022
212 319 7070