From the collection of Hans Perk; originally posted on his blog A. Film L.A. and reproduced here with his permission.

PROD. NO. UM-38    PROD TITLE "Mickey's Polo Team"    DRAFT NO. FINAL     PAGE NO. 6    DATE 1935
SEQ.NO __________    SEQ.TITLE _______________________________________________________________
Director _________________    ASST. DIR. ____________    LAYOUT MAN ____________    SEC'Y___________
SCENE NO.	ARTIST	SCREEN FOOTAGE	B. G. DATA	DESRCRIPTION OF ACTION
39	[Dick] Heumer			CU Duck - squawking - ball in mouth - Duck shakes it - shakes fanny - riders coming - exits - crowd.
42	[Bill] Roberts			PAN Duck socked into Ostrich's fanny - then socked out of scene.
43	"			PAN Duck out of Ostrich's tail - business Duck under feet - Duck reverses horses leave.
45	[Paul] Hopkins			Grand Stand Crowd - cheering wildly.
46	[Bill] Roberts			Still scene - side view riders charging over Duck from all directions.
47	"			CU Duck tears apart - TRUCK BACK - mad scramble - three come together - Duck in ground - riders through.
48	"			PAN CU Duck into ground - goal post gag - Duck down out of scene.
49	"			SEMI CU Bottom of post - post into run - horses follow - Duck trips - Duck socked - cannon gag
50	"			Perspective shot - Duck into F.g. - TRUCK BACK.
51	"			Holt blowing whistle - tries to stop play - sees players heading for him.