Davy
Can recommend the "Directory of Apple Cultivars" Martin Crawford 2nd ed
2001 (of the Agroforestry Reasearch Trust www.agroforestry.co.uk ) ISBN
1874275408 can be bought of their website.
This book details over 3000 cultivars, the main part of the book tells
you about flowering dates, ripening dates, resistance / susecptibility
to scab, canker, mildew, fireblight, cedar rust, codling moth, bitter
pit, brown rot, wheater its a tip bearer, wheather its a dual purpose
apple. Then details a description which includes a description of the
tree. Sometimes its just a one word - vigourous, others gives an
indication as to wheather spreading, upright etc.

The book also details:
self fertile cultivars
tip bearers
spur bearers
cultivars for pot culture
cultivars for no-prune culture
cultivars for areas with late frosts / forst resistant flowers / late
flowering
cultivars for Northern Britain
Cultivars with ornamental flowers
Cultivars for chalk/alkaline soils
Cultivars with lengthy flowering
Triploids
Vit C content
Cultivars for Orgainic cultivation in High/low rainfall areas /
fireblight prone areas
Apples for drying
Cultivars for woodland gardens
Fruit hanging on the tree
Fruit falling from the tree
Juice production
Cider production

When grafting another bit of wood - its the book I refer too to see how
I will grow it.

Clifford
Bawtry, Doncaster, South Yorkshire