Lot of four 7x22" silk-screened cardboard signs for display on buses. 1950s. First sign pictures woman in bathing suit and woman and boy w/picnic basket and "Swimming Pool - Picnic Grounds - Ball Park - No Parking Worries By Bus." Another sign features an owl w/"You're Wise To Avoid Parking Worries By Riding This Bus" text. Next features cartoon of marching band major w/"To The Rear March - Make Room For The Next Passenger!" text. Last sign shows three parked cars w/middle car crushed and "Why Try The Squeeze Play? Shop By Bus - No Parking Worries" text. One sign has marker name on reverse and all have some scattered aging/wear. Fine overall.