That looks like my ford backhoe and loader. The tractor itself is most likely either a 621 or an 821, which would be a 4 cylinder gas (or diesel) without 3 point hitch or a mid-mount hydraulic pump but with a front mounted hydraulic pump. The backhoe should be a Sherman and the loader looks like a ford loader. Well that is what it looks like the 21 series tractors were an industrial model, and if I am not mistaken (which I am quite often) the yellow color was used of road crews. Well now that I look a little better it seems like the tractor used to be red which witch could mean it's the 600 series work master.