Tom Horn served as the Director of Expertizing at the APS until June 2019. He continues to volunteer in the Expertizing department, frequently assisting with the Reference Collection.
Scrutinizing This 1-cent Stamp Can Pay Big Dividends
Expertizing Remains a Vital Service of the APS
Color: Varieties, Changelings and Manipulations
Attention to Detail: Little Things Mean a Lot
Article of Distinction: Robert Louis Stevenson: Poet, Parts 1 and 2
Scott English, Executive Director
Susanna Mills, Editor in Chief