Yes. There are many kinds of clamp-on pump holders. From umbrella clips, like the Campy, REG, AFA, etc. Or the double clamp-on ones. Like these, from you neck of the woods.
http://www.ebay.com/itm/NOS-CYCLO-PU...item19d1a36a34
http://www.ebay.com/itm/NOS-KARASAWA...item1c2295fa12