In 2008, California State University, Northridge produced an exhibition:

In our Own Backyard: Resisting Nazi Propaganda in Southern California, 1933-1945

[n.b. The exvibition documents are no longer online at Northridge, but have been preserved in the Internet archive]

This exhibition has a couple of images of him, as well as a number of documents relating to his activities with the America First and the Friend of Progress organizations and the sedition trial.

Adagios

The more the haste the less the speed.
A fried in need is a friend indeed.
Prevention ounce is pound of cure.
What can't be cured you must endure.
Always look before you leap.
Blessed is restoring sleep.
Naught but death the sinner's wage.
All the world is but a stage.
Dollars come from hoarded pence.
Get thee, Satan; Get the hence.
The exception proves the rule.
Experience is a bitter tool.

Adagios

Time invariably cures.
Change and change alone endures.
Easy come and easy go.
Always, son, hoe out your row.
No good comes from ill-won pelf.
Every doc should heal himself.
Dolts cannot be made to think.
Horses can't be made to drink.
Faint heart never won fair maid.
Winces, doth the galled jade.
One good turn another earns.
Long the lane that never turns.
Armed well, he whose cause is just.
Busy needles do not rust.
Words of wisdom such as those
Can be used in fighting foes.

Adagios

Fool and money soon are parted.
Victory's not for chicken-hearted.
Easy won is dearly bought.
Quickly learned is soon forgot.
Stick, O cobbler, to your last.
Things to come their shadows cast.
Save your breath to cool your broth.
Sacred is the plighted troth.
Ye shall garner as you sow.
Great oaks from small acorns grow.
Silver lines the darkest cloud.
Two is company - three's a crowd.
Making haste is making waste.
Do not argue over taste.
So say sages of the past.
Ponder well and hold them fast.

September 11, 1919

Adagios

All that glitters is not gold.
O joy when sheep are in the fold.
Smite the iron when it's hot.
The wish is father to the thought.
Early the bird that gets the worm.
Until you're hurt you should not squirm.
Do not kick against the bricks.
And never count the unhatched chicks.
Time and tide for no man wait.
Never is much worse than late.
Shed no tears about spilled milk.
Sows' ears can't make purse of silk.
Cross no bridge until it's reached
Always practice what you've preached.
These few saws and many another.
Should receive your homage brother.

September 11, 1919

Adagios

Halfway done that well is started.
Roads are short to cheery-hearted.
Pennies saved are pennies earned.
Fire frights the child that's burned.
You can't eat the cake that's eaten.
Faint of heart is quickly beaten.
You can't tell until you try.
No water's missed till well is dry.
There are no pockets in a shroud.
Falls are waiting for the proud.
No man lives by bread alone.
Every sinner must atone.
Silence if you'd evil speak.
He will not find who does not seek.
These are maxims tried and true.
And they all apply to you.

Adagios

Uneasy lies the head that's crowned.
It's love that makes the world go round.
A daily apple cheat's the doc.
Like-plumed together flock.
Dead men have no tales to tell.
It's worth doing, do it well.
Opportunity knocks but once.
Words are wasted on the dunce.
A stitch in time saves many a stitch.
Spoil the child and spare the switch.
Make your hay while sun is shining.
Waste no time in vain repining.
The chain is strong as the weakest link.
Evil to them who evil think.
Thus say sages through the ages.
Pasted 'em in your scrapbook pages.