Shrubs

Gardening with Shrubs (2003) by Eric Sawford

Contains lots of gorgeous color photographs.

Omits zone hardiness information. The author is a Brit, so maybe he does not understand why this information is important in the U.S.

Shrubs for shade:

Laurel (Acuba japonica) [Crotonifolia, Gold Dust, Variegata, Crassifolia, Golden King]
Camellia
Fatsia japonica
Rose of Sharon (Hypericum calycinum)
Holly (Ilex aquifolium) [Golden Queen, Golden van Tol, Silver Queen]
Privet (Ligustrum sp.)
Honeysuckl (Lonicera sp.)
Ornamental bramble (Rubus cockburnianus) [Goldenvale, Benenden]
Skimmia
Viburnum davidii
Vinca

Shrubs for clay soils:

Acuba
Barberry (Berberis sp.)
Japonica (Chaenomeles speciosa) [Crimson & Gold, Moerloosei, Pink Lady, Elly Mossel]
Mexican orange blossom (Choisya ternata) [Sundance, Aztec Pearl]
Dogwood (Cornus sp.)
Cotoneaster
Forsythia
Spanish gorse (Genista hispanica)
Hypericum
Mock orange (Philadelphus coronarius) [Varoegatus, Aureus]
Potentilla
Firethorn (Pyracantha sp.)
Ornamental currant (Ribes sp.)
Rosa
Spirea
Viburnum
Weigela

Some other shrubs of interest:

Japanese maple (Acer palmatum)
Butterfly bush (Beddleja davidii)
Box (Buxus sempervirens)
Creeping dogwood (Cornus canadensis)
Winter hazel (Corylopsis sp.)
Smoke bush (Cotinus coggyria)
Witch hazel (Hamamelis sp.)
Shrubby mallow (Hibiscus syriacus)
Ornamental cherry (Prunus tenella) [Fire Hill]
Yucca