Who Shod the Last Triple Crown Winner?

Sometimes a great event gives me a chance to dig into the archives and find some lost facts that deserve to have another chance to shine.

Raceplates and Horseshoers in Preakness Stakes History

In this ad from the Daily Racing Form in 1931, Victory proclaims that racehorse Mate ran in the Preakness wearing the new-fangled aluminum raceplates--and won! It took a lot of years to convince trainers and horseshoers to switch from steel to aluminum. In 2011, Shackleford won in Polyflex glue shoes. 

It's Preakness Stakes day, 2013-style, in the USA! Whether you think Kentucky Derby winner Orb is a shoe-in to win in his Jim Bayes Jr. crafted raceplates or if you like California's Goldencents, shod by Jim Jimenez, today's the day they line up at the Baltimore, Maryland track affectionately known as "Old Hilltop" for the second leg of the Triple Crown of Thoroughbred racing.

What is it about Maryland? Why are there so many connections to the Triple Crown that pass through this state?