I found a list of some motor bike/moped style motor bikes
Mikey Bike Motor Bikes ------ Four Generations of Collecting
# Alexander Specialty Mfg
# American Brake Shoe
# Anthony Mfg Co
# Apex Bicycle Motor
# Argyle Scooter Cub
# Auto Scoot
# Bicycle Engine Mount Co. (looking for more information)
# Brogan Cycles
# Brimer
# Buzz Bee
# Buzz Boy
# By George
# California Motor Mount Kit
# Chicken Power Motor Kit
# Clark Cyclone
# Comet
# Commando (Power Products)
# Constructa Scoot
# Cooper War Combat Motor Scooter
# Cox Bronco
# Crocker Scootabout
# Cushman Eagle - Modified
# Cushman Road King
# Cushman Vanguard
# Custer Scooter Dayton O
# Cyclemotor
# Cycle-scoot
# Dart (Build it yourself) Kit
# 1941 Dayton Twinflex (Cafe Bicycle)
# Davis/Dayton
# Dinky Cycle
# Discoverer
# Doodle Bug
# Duncan
# DynaCycle
# DynoMite
# Eagle
# Earnshaw Road Arro
# Egley
# Elgin
# Eshelman
# Evans
# Evinrude
# Famous James
# Forall
# Fox
# The Flying Zeemo
# Garrison Manufacturing
# Gilliom
# Globester
# Go Byke
# Harley-Davidson Topper
# Huffman Model 90SF
# Hurricane
# Indian/Lowther
# Indian Papoose
# Indian Vagabon
# J.A. Strimple Company
# Jack & Heintz
# Jacobson
# J.B. Special
# Keen
# Kraft
# LaRay
# LaRay - Restored
# Leighton
# Lorenzen Pacmaker (Master Craftsmen)
# Lowther
# Lowther Plaboy
# Lundell Walcycle
# Marman Twin
# Martin Road Runner
# Mead Ranger
# Merx
# M.G. Huffman Motorbike Kit
# Mikey Bike - Animal
# Mikey Bike - Expert
# Mikey Bike - Model S24
# 2002 Mikey Bike Model 71
# Mikey Bike - Prototype
# Mohs
# Mono Cycle
# Monark Super Twin ST-54
# MotorMaster 1939
# Motor-Scoot Master 1939
# Moto-Scoot - American Challenger
# Moto-Scoot 1940's
# Muncie
# Mustang
# North Thorne
# O & R Motor Kit
# Orton Rocket
# Pixie
# Playboy
# Pony Cycle
# Powell
# Powerbike
# PowWow
# Propo
# Puddle Jumper
# Ranger
# Regal
# Reynolds Metals Co.
# Rice
# Roadmaster Whizzer
# Rock-ola
# Rocket Alexander
# Rollaway
# Rose Manufacturing Co (WA)
# Safticycle
# Safticycle Commando
# Saginaw Power Bike
# Salsbury
# Sears Motor Bike Kit
# 1947 Schwinn WZ507
# 1948 Schwinn S10 H-Engine Kit
# Schwinn S4 Whizzer
# Scootabout
# Scooter Cub
# ScootMaste
# Scoot-Mobile
# Scoot-Nik
# ServiCycle
# Shaw
# Simplex
# Simplex Motorbike
# Simplex Scooter
# Simplex Servi-Cycle
# Skat Kat
# Skat Kitty
# Speigel Airman
# Spritz
# A.O. Smith
# Speedibike
# Speedrive
# Springcycle
# Starlite
# Steen's The Gasser
# Stoffer Special
# Sundowner
# Super Cycle (King Midget)
# Super Scooter
# TAZ
# Tin-O-Bike
# Topper Motor Scooter
# Tote Goat
# Transporter
# Travis
# Victory
# Viking Family Cycle
# 1954 Wasp
# Wasp M100
# Whizzer 226-WH (1948)
# Whizzer Ambassador (1951)
# Whizzer Ambassador 2008
# Whizzer F
# Whizzer Model J (Late 1940's)
# Whizzer NE-R 2009
# Whizzer Pacemaker
# Whizzer Service Pickup
# Whizzer Special
# Whizzer Sportsman 1950
# Whizzer Sportsman 1952
# Whizzer Wasp
# Wyse Cycle
# Yardman Motorette
# Zeemo Electric Power Motobike
# Zip Cycle
# ZipScoot