I believe most of the Witham Bust Half collection was sold privately to an investor and these coins later came to public auction through Heritage.
Many of Stewart Witham's Capped Bust Halves were sold in August 2010 at Heritage Auction #1143 and also in the "Sunday and Tuesday" Internet only auction # 210083 , both of which can be searched on Heritage's archived auctions with images available. Scroll down "limit results to" and find the August 2010 auctions and select 1143 or 210083, they are listed separately, put Witham in upper search, select bust half dollars from the scroll down menu and "titles and descriptions" then search.
I hope this is helpful to those who want to see some images of the CBH's of the Stewart Witham Collection.
Chuck Allen #1404