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V.	Years of Accomplishment. Tile Design and Production, Construction Projects, Research and Publication: 1902-1930
1902	Promoted to “Master” status by Society of Arts and Crafts, Boston, based on the excellence of his tiles.
February: travelled to Madeira and Italy, where he visited Florence and the pottery at Montelupo, a nearby hill town.
November 21: filed first mosaic patent.
1903	April: travelled to Germany and Italy.
August: commissioned to create the floor tiles for the new Pennsylvania State Capitol building at Harrisburg.
October 29: Mary R. Mercer, HCM’s mother, died.
1904	March: travelled to Gilbraltar, Spain (visited Triana Pottery), Germany, Austria and England, where he obtained more medieval tile designs.
Awarded the Grand Prize for his tiles at the Louisiana Purchase Exposition, St. Louis, Missouri.
I CEMENT •AGE •
A MAGAZINE DEVOTED TO THE USES OF CEME N T
Vol. V JULY, 1907 No. 1
PRIZE DESIGNS FOR CONCRETE HOUSES
CONCRETE IN THE NORTHWEST
CERAMIC DECORATION AND CONCRETE CONSTRUCTION
GOVERNMENT REPORT ON THE SAN FRANCISCO EIRE
AMERICAN' SOCIETY FOR TESTING MATERIALS
MEETING OF THK ASSOCIATION OF AMERICAN PORTLAND CEMENT MANUFACTURERS
EDITED BY ROBERT W LESLEY. ASSOCIATE AM. SOC. CE. PUBLISHED BY THE BANNINC COMPANY. hliV A-t S V.
A cover of the magazine. Cement Age. which was founded in 1904 and devoted to the uses of cement
HCM’s first known concrete structure was a kiln house on the grounds of Aldie.
Cement Age founded, a magazine devoted to the uses of cement. Cement was extolled in its pages as the ideal modem building medium. HCM’s articles, as well as descriptions of both Mercer brothers’ creations appeared in its issues over the next several years (see 1905, 1907, 1908).
1905	HCM reconciled with the BCHS about this time, partly as a result of overtures from General W. W. H. Davis, the Society’s president.
June: an article entitled “Artistic Treatment of Concrete” in Cement Age magazine featured the concrete creations of Willie Mercer, Jr., sculptor, who had “been experimenting in cement as a medium for a number of years,” according to the author. HCM’s novel tile mosaics were mentioned as well, described as “peculiarly adapted for the decoration of cement surfaces.”
December 4: Aunt Lela (Elizabeth Lawrence) died.
1907 April: HCM and Cement Age editor Robert Lesley, in an article entitled, “A Tile-Concrete Roof,” described a roof built for a kiln house at HCM’s Moravian Pottery, on the grounds of Aldie. This building was HCM’s first concrete structure.
18 HENRY CHAPMAN MERCER: AN ANNOTATED CHRONOLOGY