Has anyone any data on The Slide a painting by Thomas Webster a winter scene of people on a frozen pond?

I just bought an engraving of Thomas Webster's, "The Slide". I googled the engraver, "Robert Graves" and also the painter, "Thomas Webster". There is a fair bit of information on both but "The Slide" wasn't mentioned on any of the information. My copy though, also has the information on the printer. The printer of my copy is "Moore, McQueen & Co." and the engraving was published in both Oxford & Paris on June 06, 1864. google that and you will have all the available info on the piece. Apparently, it is of significant value. There is a gallery in Maryland asking $1,750.00 for a copy.