These 3  books are being sold as a set. Written by Michael Walker and different other authors during the 1970s and 80s they contain prayers for various days and occasions throuout the Christian year. The first book has quite a few pencil writings in it but the other books are clear and all three are in good condition considewring their age. 
 
Size for all 3 books together:
Height: 19.8cm
Width: 12.7cm
Thickness: 2.1cm
Weight: 348g