John Newton Howitt – Pulp Covers

Hordes of the Red Butcher

The Spider - June 1935

Spider June 1935

The Spider At Bay

Spider - October 1938

The Spider - October 1938

Brides For The Dead!

Horror Stories 1935 August

Also, Hell Beneath The Streets

The Coming Of The Terror

Spider September 1936

Blight Of The Blazing Eye

Spider April 1939

The Silver Death Rain

Th Spider March 1939

Wings Of The Black Death!

The Spider, December 1933

Spider, The. 1933 December #3

Cap’n Calamity

Adventure September 1, 1934

This entire issue can be downloaded here

Fool’s Jewels

DIME DETECTIVE MAGAZINE. July 15, 1934

Answered In Blood

DIME DETECTIVE MAGAZINE. March 1, 1934

The Smoking Corpse

DIME DETECTIVE MAGAZINE. May 1, 1934

Also featuring Read ‘Em And Weep and The Duchess Of Death

Let’s Drink Poison

DIME DETECTIVE MAGAZINE. May 15, 1934

Corpse Control

DIME DETECTIVE MAGAZINE. June 1, 1934

Also, Murder In The Mud

Twenty Steps To Doom

DIME DETECTIVE MAGAZINE. July 1, 1934

Death On Delivery

DIME DETECTIVE MAGAZINE. September 1, 1934

Dime Detective September 1, 1934

Dime Detective v13 n04 [1934-09-01] 0012-13

Dime Detective v13 n04 [1934-09-01] 0062

Dime Detective v13 n04 [1934-09-01] 0104-105

Dime Detective v13 n04 [1934-09-01] 0121

Also, Red Friday. This entire issue can be downloaded here.