Highlighting the varied landscape and often historic structures of the city at dusk, Walla captures beauty and lushness in the mundane.His previously published books include, 'Casa del Herrero: The Romance of Spanish Colonial,' and 'The Steedman Silver' among others. His work has been included in various publications including 'Classical Interiors' by Elizabeth Dowling, and 'The Art of Classical Details' by Phillip Dodd. His work has been featured in Architectural Digest, This Old House and California Homes among many other publications.