If I read the print right, a bit faint in places, the primary has two separate windings 0-100-120v?
If so you could either wire them in series for 240vac input or parallel them for 120v, make sure you use the same wire numbers for each connection, otherwise it will be out of phase, obviously do not connect the 100v wires when hooking up for 120v..
The secondaries appear to be two 27-0-27 or 54v centre tapped.
You can use this one of two ways for 27vac, either put a full wave bridge from a 0 cenre tap to one 27v out.
Or use the centre tap as common and put one Rectifier in each of the 27v sides for one set of windings, this is full-wave centre tap arrangement.
Any parallelling of windings must use the same numbered wire to connect together.